2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Another headlight switch?

Thread Tools
 
Search this Thread
 
Old 06-24-10, 11:30 PM
  #1  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Another headlight switch?

I went to show my buddy how the flash to pass works without the headlights having to go up.

The head lights worked fine before and so did the FTP + high beams.

I tried to show him and the high beams didn't work.. So i go to tun my heads light on and they don't work.

MY turn signals weren't working at first but they some how started working again after checking every single fuse in the kick panel.(i don't have the fuse cover)

Everything else in the car is working fine. Heads lights should be fine right? Both wouldn't go out together like that i wouldn't think.
Old 06-25-10, 12:46 AM
  #2  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
When you tried to turn the lights on did they not pop up but turned on or they popped up but did not turn on or they didn't pop up as well as not turn on? If the actual headlights did not turn on then check for voltage on the Red wire at the headlight relay. This relay is mounted at the front of the car. When standing in front of the car and looking into the engine bay the headlight relay would be located second from the left. Red wire should have battery voltage with no key in the ignition.

If the Red wire does not have battery voltage then check the 30 amp "HEAD" fuse in the engine fuse box.
Old 06-25-10, 09:36 AM
  #3  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
I was night time and the headlights were already on. I had pulled over at a store parking lot.

Turned the lights off. ANd went to hit the high beams to show him how they flash through the bumper. but the high beams didnt work at all. SO i said **** it. IDK what wrong with it ill deal with it later.

SO i go to turn the lights on to drive off. and nothing..

ALl interior lights and so on work. JUst no headlight or high beams.
Old 06-25-10, 09:37 AM
  #4  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
double.
Old 06-25-10, 10:17 AM
  #5  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Originally Posted by satch
When you tried to turn the lights on did they not pop up but turned on or they popped up but did not turn on or they didn't pop up as well as not turn on? If the actual headlights did not turn on then check for voltage on the Red wire at the headlight relay. This relay is mounted at the front of the car. When standing in front of the car and looking into the engine bay the headlight relay would be located second from the left. Red wire should have battery voltage with no key in the ignition.

If the Red wire does not have battery voltage then check the 30 amp "HEAD" fuse in the engine fuse box.
Relay has 12v and the 30 fuse is good. EVen tried another just to make sure.

PS. Turn signals always worked. Must been flustered last night and didnt realized the turn signals were not working due to the key not being in the ignition.


SO just headlights here.
ALso. I recently unbolted all my relays from the original spot and tucked to the side with a zip tie. they do get to move and bounce around a little. Are they delicate?

Also. when i hit the highbeams or turn the lights on, i can hear and feel the relay clicking
Old 06-25-10, 10:24 AM
  #6  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Okay. Now go back to the headlight relay once more with a jumper wire long enough to reach from the relay to the negative terminal of the battery. Take this jumper wire and shove one end into the back of the relay plug specifically where the White/Blue wire hangs out and then take the other end of the jumper wire and place it onto the negative battery terminal and your lights should come on. They shouldn't pop up but look into the flash to pass lens to verify that the headlights do indeed turn on.
Old 06-25-10, 10:28 AM
  #7  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Can i ground anywhere on the body? Batt. in in the hatch.

But i got it. W/B wire to ground. BRB in 1 sec.

OK i did so. THe relay clicks but the head lights do not come on.
Old 06-25-10, 10:47 AM
  #8  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
Can i ground anywhere on the body? Batt. in in the hatch.

But i got it. W/B wire to ground. BRB in 1 sec.

OK i did so. THe relay clicks but the head lights do not come on.
Well crap! Okay, with the W/L grounded if you can, check the Red/Green wire in the same relay for voltage and it should have battery voltage. Again, to do this check, the W/L wire needs to be grounded!
Old 06-25-10, 11:01 AM
  #9  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Originally Posted by satch
Well crap! Okay, with the W/L grounded if you can, check the Red/Green wire in the same relay for voltage and it should have battery voltage. Again, to do this check, the W/L wire needs to be grounded!
OK
I ground the WHite/light blue. THe relay clicked again.

Went to check the REd/green for voltage and NOTHING.
Double checked and nothing.


On that relay. Nothing grounded. ALl the wires have voltage besides the WHite/ light blue
Old 06-25-10, 11:24 AM
  #10  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
OK
I ground the WHite/light blue. THe relay clicked again.

Went to check the REd/green for voltage and NOTHING.
Double checked and nothing.


On that relay. Nothing grounded. ALl the wires have voltage besides the WHite/ light blue
The W/L wire is a ground wire so it should never have voltage. Now you said that all the wires in the relay have voltage except for W/L wire. Does this include the Red/Green wire? If so, you're stating that the Red/Green wire has voltage when the jumper wire was not used to ground out the W/L wire?
Old 06-25-10, 11:30 AM
  #11  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Crap i typed that all wrong.
HEre is what i was trying to say. I had to go outside to the car and triple check.

Relay as is. NOthing grounded.

W/L HAS VOLTAGE
RED has voltage
Red #2 has voltage
RED/GREEN NOTHING
Old 06-25-10, 11:34 AM
  #12  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Okay, I made an error earlier when I said the W/L wire should not have voltage. It works as follows. When you turn the headlight **** up full way the headlight switch puts a ground to the W/L wire and until it does the W/L wire will have voltage as you have already proven. Since this is the case, then try turning the headlight switch to full up to turn the headlights on and then recheck to see if the W/L wire still has voltage on it with no jumper wire being used. If the W/L wire continues to have voltage when the headlight switch is turned full up then this proves that the headlight switch is malfunctioning.
Old 06-25-10, 12:23 PM
  #13  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
BY the way. Thank for your help so far. It is much appreciated.


OK. Ran out real quick. SOmething gotta be wrong.

TUrned the headlight switch to the one position. HEadlight popped up. Still no lights. Same as before.

WHile on the ON position and Nothing GROUNDED.

W/L = 1-4 volts really weak. Barely moves the needle.
Red GReen = 1-4 volts " " " "
Red #1 = full voltage
Red #2 = Full voltage
Old 06-25-10, 12:35 PM
  #14  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
BY the way. Thank for your help so far. It is much appreciated.


OK. Ran out real quick. SOmething gotta be wrong.

TUrned the headlight switch to the one position. HEadlight popped up. Still no lights. Same as before.

WHile on the ON position and Nothing GROUNDED.

W/L = 1-4 volts really weak. Barely moves the needle.
Red GReen = 1-4 volts " " " "
Red #1 = full voltage
Red #2 = Full voltage
That is a bit strange for the lights should not pop up when the **** is turned to the first position. Before this is addressed could you please take the jumper wire and shove one end into the back of the plug where one of the Red wires is and then place the other end into the back of the R/G wire and confirm that the lights turn on by looking into the flash to pass lens. Also, if the lights turn on then go into the car and check to see if the blue high beam light in the dash is lit or not. If it is not lit then pull back on the lever and see if the light does come on and also check to see if the flash to pass lens is brighter to indicate that the high beam did indeed work. If the high beam blue light indicator is on then pull the lever to deactivate it and see if the blue high beam indicator light goes out and that the lights actually dimmed. By doing this you would verify that the dimmer relay and dimmer switch were operating properly.
Old 06-25-10, 01:18 PM
  #15  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
BY the way I turned the **** completely. SO there should be no problem there.

brb


ok. Jumped from RED wire to W/B wire. Lights did come on. Although the High beams do not work. NEither does the blue light in the dash is not coming on.

Light go on and off when i hit the highbeam witch.
Old 06-25-10, 01:24 PM
  #16  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
BY the way I turned the **** completely. SO there should be no problem there.

brb
Do you mean that the headlights popped up when the **** was turned completely?
Old 06-25-10, 01:35 PM
  #17  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Originally Posted by satch
Do you mean that the headlights popped up when the **** was turned completely?
Yes the head lights go up and down when i turn the **** on and off. HAve always worked.

Its just the Lights are not coming on.
Old 06-25-10, 01:47 PM
  #18  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
Yes the head lights go up and down when i turn the **** on and off. HAve always worked.

Its just the Lights are not coming on.
EDIT:

Okay, so overall the W/L wire is not receiving the proper ground signal from the headlight switch thus preventing the headlights from turning on properly. Also, you can prove whether the headlights high beams work by jumpering the Red/Green wire of the dimmer relay to the Red/White wire in the dimmer relay with the plug removed from the relay. High beams should work as well as the blue high beam indicator

Dimmer relay has two R/G wires, R/B, R/W, and White. When the plug is connected(no jumper) to the dimmer relay try getting a voltage reading on the White wire when on low beam which should be battery voltage. If the plug is connected, with no jumper wire, when you pull on the dimmer lever to activate the high beams the White wire should show no voltage.
Old 06-25-10, 03:12 PM
  #19  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
SO i put a new or spare headlight switch on and still the same problem...

How am i going to know if the light is on low beams? AM i suppose to leave the RED wire jumped to the W/B to do this?

I went outside. Check for voltage on all the wires on that dimmer relay. None of them have voltage. With the light on the on or off position.

NO jumpers.
Old 06-25-10, 08:06 PM
  #20  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
The cause for the spare not working could be caused by various factors including the wiring harness being damaged which would preclude the spare from working even if it were completely functional. To test whether the problem is from the harness or not with respect to the lights not turning on you could do as follows. Remove the plug from the headlight switch and look at the harness plug from behind and jumper the Red/White wire to the Black wire. If the harness is functional then the lights ought to turn on.

In checking the voltage on the dimmer relay wires the Red and Red /Green wires of the headlight relay need to be jumpered because the R/G wires that connect to the dimmer relay is how the dimmer relay receives power. So once the above two wires are jumpered then both R/G wires at the dimmer relay will have power, the R/B will have voltage when the low beams are on, the R/W wire will have voltage when the high beams are on and the White wire has voltage when low beams are on and no voltage when the high beams are on.

Lastly, to tell whether the low beams are on and not the high beams you would need to focus on the three wires that are connected to each headlight. Black is the ground wire for the headlight, R/B wire is low beam and R/W wire has voltage when the high beams are on. Thus when the lights are on if you get a voltage reading off the R/B wire then that means the low beams are on and not the high beams and therefor if the lights are on and the R/B wire does not have voltage then the the R/W wire must have voltage and therefor the brights are on.

EDIT: Another thing to do is when you disconnect the headlight switch from the harness that would prevent the W/L wire at the headlight relay from having voltage and if the W/L wire is then jumpered to a good grounding source then the lights should turn on as the R/G wire coming out of the headlight relay now should have voltage on it w/o it having to be jumpered. If this occurs then the headlight relay is working properly.
Old 06-25-10, 08:19 PM
  #21  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
thanks ill try it tom. if i dont have to work.

Actually just did it.

Nothing jumpered besides the Red/WHite to Black on the plug for the headlight switch.

I could hear the relay clicking but NO lights.
Old 06-25-10, 08:49 PM
  #22  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by junito1
thanks ill try it tom. if i dont have to work.

Actually just did it.

Nothing jumpered besides the Red/WHite to Black on the plug for the headlight switch.

I could hear the relay clicking but NO lights.
When the above two wires are jumpered the W/L should have no voltage and the R/G should have 12 volts. Before the W/L wire had 1 to 4 volts when it should have had zero and any voltage on the W/L wire will prevent the headlight relay from operating properly. If the W/L wire has no voltage then R/G should automatically have 12 volts and if not then the relay is faulty.

EDIT:


one other thing you could do is maybe the R/W wire is connected properly to the W/L wire but "maybe" the Black wire is not really grounding like it should so you could jumper the R/W wire in the harness to a known ground and see if the lights come on and also check what the voltage reading on the W/L wire when the R/W wire is grounded to a valid ground source.
Old 06-25-10, 09:47 PM
  #23  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 12 Likes on 11 Posts
Originally Posted by satch
When the above two wires are jumpered the W/L should have no voltage and the R/G should have 12 volts. Before the W/L wire had 1 to 4 volts when it should have had zero and any voltage on the W/L wire will prevent the headlight relay from operating properly. If the W/L wire has no voltage then R/G should automatically have 12 volts and if not then the relay is faulty.

EDIT:


one other thing you could do is maybe the R/W wire is connected properly to the W/L wire but "maybe" the Black wire is not really grounding like it should so you could jumper the R/W wire in the harness to a known ground and see if the lights come on and also check what the voltage reading on the W/L wire when the R/W wire is grounded to a valid ground source.
My EDIT above I believe must be incorrect for I believe the Black wire is providing a proper ground to the R/W wire because for the headlights to pop up the R/W wire must provide a proper ground and they are indeed popping up so my thought while maybe sounding good actually has no weight because the R/W wire could not have a ground put to it if the Black wire was an ineffective ground.

That W/L wire is pissing the hell out of me because it's not providing a proper ground but it appears the problem is occuring within the W/L wire between the headlight relay and where it connects to the cluster harness or where the cluster harness connects to the headlight pigtail. It has to be one of the two.

Where are you HAILERS?
Old 06-26-10, 03:52 AM
  #24  
HAILERS

 
HAILERS's Avatar
 
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes on 19 Posts
You turn the headlight switch to ON. The headlights pop up. But the lights don't come on.

You said in post #15 that the lights do come on if you go to high beams with the high beam switch (Dimmer switch). So when you do this, does the high beam indicator on the dash light up? The blue light?

IF so, then I'd guess your low beam filiments have burnt up in the light bulbs themselves. It's not that uncommon for both go go at once. Or maybe the contacts inside the Dimmer relay have gone bad.

To find out, I'd connect everything up and turn the headlights on. Assuming that no lights come on, then I'd go find the DIMMER RELAY and pull its plug off. Set the relay to the side. Now jumper the RED GREEN wire to the RED WHITE wires in the dimmer relays plug. The high beams should come on and the blue indicator light comes on.

Then jumper the RED GREEN wire to the RED BLACK wire in the connector. The low beams should come on. If they don't, then the filiments in both headlights have gone **** up for the low beams and you need new bulbs/headlights.

If your car is a series five forget anything I wrote and forget I answered this post. I don't mess with series five headlight no 'mo.

And when you write W/B, that does not describe a white wire with a blue stripe. It describes a white wire with a black stripe. A white wire with a blue stripe is W/L.

The wires in the dimmer relays plug should look like in the jpg attached. A six socket plug with two R/G, a R/W, a R/B, a W and one empty socket
Attached Thumbnails Another headlight switch?-seriesfourlights.jpg  
Old 06-26-10, 09:41 AM
  #25  
F**K THE SYSTEM!!

Thread Starter
 
junito1's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 2,585
Likes: 0
Received 1 Like on 1 Post
Lights only came on because i had jumped Red wire to W/L
WHile they were jumped If you hit the high beam switch it would just turn the lights off. or on.
I dont kow if its the highbeams working or the running lights.
NO, the blue high beam indicator has not worked at all.


Quick Reply: Another headlight switch?



All times are GMT -5. The time now is 01:10 PM.