Headlight problem.
#1
Headlight problem.
My headlights pop up but don't come on. my high beams work, all my switches work, turn signals work, interior lights work. My regular headlights just don't turn on when the headlights pop up. The only thing i can think of is maybe the headlight switch. im lost on this one because theres so little wiring for the lights.
#2
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
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100% NOT the headlight switch.
Probably the DIMMER relay OR the low beam filiments are burnt out. Can happen to both bulbs at the same time. Not that likely but I've seen it on a car I bought.
Dimmer relay can be located by downloading the BODY ELECTRICAL section of the FSM and turning the pages til you see the page showing the dimmer relay.
This applies if the car isn't a convertible.
You KNOW the switch is good because the high beams work. YOu turn the switch and that switch puts a ground on the headlight relay which now pulls in and sends power to the DIMMER relay. See attached jpg
You can prove it's the dimmer relay. Pull the Dimmer relay out of its plug/connector, and put it to the side. Make a jumper wire bare at each end. Put one end of that jumper wire in the socket where the Red/Green wire is in the relay base. Then put the other end of that jumper wire in the socket where the Red/Black wire is. PUt the headlight switch to ON. Low beams should light up.
Then move the wire end that was in Red/Black to the socket where the Red/White wire is. High beams light up.......proving the high and low beam filiments are good in both headlights and that the Dimmer realy is bad.
Probably the DIMMER relay OR the low beam filiments are burnt out. Can happen to both bulbs at the same time. Not that likely but I've seen it on a car I bought.
Dimmer relay can be located by downloading the BODY ELECTRICAL section of the FSM and turning the pages til you see the page showing the dimmer relay.
This applies if the car isn't a convertible.
You KNOW the switch is good because the high beams work. YOu turn the switch and that switch puts a ground on the headlight relay which now pulls in and sends power to the DIMMER relay. See attached jpg
You can prove it's the dimmer relay. Pull the Dimmer relay out of its plug/connector, and put it to the side. Make a jumper wire bare at each end. Put one end of that jumper wire in the socket where the Red/Green wire is in the relay base. Then put the other end of that jumper wire in the socket where the Red/Black wire is. PUt the headlight switch to ON. Low beams should light up.
Then move the wire end that was in Red/Black to the socket where the Red/White wire is. High beams light up.......proving the high and low beam filiments are good in both headlights and that the Dimmer realy is bad.
#3
It's a convertible. I figured it wasn't the switch just throwing things out there. does the relay have to be bolted to a ground. well guess not because the high beams work.. ok hm im going to have to figure out what the relay looks like because all of my relays are inside the cabin now and i forget witch ones the dimmer relay. i know theres a short somewere weather its the relay or not idk.
#4
Ok so the dimmer relay orignal place was right under the front of the hood. I think i delete cooling fan relay, 4 a/t relay and lock up relay. so all i have is headlight relay and the dimmer relay. i forgot i pput them 2 in the wheel wheel by were the bumper bolts on. im going to have to do some investigating. a wire could be shorting out or somthing stupid.
#5
HAILERS
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Sorry about it being a convertible.
In that case it might be the CPU. Seems CPU's on convertibles are headlight related in someway. It's been proven by JACKHILD59 and others.
I'd still do the jumper wire in the DIMMER relays base though. That has to work for convertibles or coupes. You can prove both filiments in the lights are good by doing that.
https://www.rx7club.com/showthread.p...ight=CPU+LATCH
Actually JACKHILD59 and others with series five convertible seem to not be able to get the high beams working and staying on high, which makes me think for sure it has to be your Dimmer Relay or broken low beam filinments in the bulbs.
In that case it might be the CPU. Seems CPU's on convertibles are headlight related in someway. It's been proven by JACKHILD59 and others.
I'd still do the jumper wire in the DIMMER relays base though. That has to work for convertibles or coupes. You can prove both filiments in the lights are good by doing that.
https://www.rx7club.com/showthread.p...ight=CPU+LATCH
Actually JACKHILD59 and others with series five convertible seem to not be able to get the high beams working and staying on high, which makes me think for sure it has to be your Dimmer Relay or broken low beam filinments in the bulbs.
#7
well i jumped the plug and nothing. actually i jumped both relays in every way possible and nothing happened. this headlight problem happend before and i Pm'ed you (hailers) and i didn't recieve anythign back. this was like 2 months ago maybe. i pulled this wire off that i had gorounded by them and they started working but idk if that was the problem. they might have just started working all of a sudden
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#8
HAILERS
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HAILERS never looks at his pm's ...ever almost.
It's always possible the connectors at the bottoom of the engine bay fuse box might not be making good contact with the fuse box. Might wiggle them to see if the lights stop working again. HEAD fuse provides power to the headlight relay. No power to the relay means no lights. Helps to have a digital meter. I saw one at Harbor Freight for seven bucks USA money. Cheap. Just put it on dc volts and the 20vdc setting and go at it. 'Seven bucks. Can't buy a six pack for that.
It's always possible the connectors at the bottoom of the engine bay fuse box might not be making good contact with the fuse box. Might wiggle them to see if the lights stop working again. HEAD fuse provides power to the headlight relay. No power to the relay means no lights. Helps to have a digital meter. I saw one at Harbor Freight for seven bucks USA money. Cheap. Just put it on dc volts and the 20vdc setting and go at it. 'Seven bucks. Can't buy a six pack for that.
#9
HAILERS never looks at his pm's ...ever almost.
It's always possible the connectors at the bottoom of the engine bay fuse box might not be making good contact with the fuse box. Might wiggle them to see if the lights stop working again. HEAD fuse provides power to the headlight relay. No power to the relay means no lights. Helps to have a digital meter. I saw one at Harbor Freight for seven bucks USA money. Cheap. Just put it on dc volts and the 20vdc setting and go at it. 'Seven bucks. Can't buy a six pack for that.
It's always possible the connectors at the bottoom of the engine bay fuse box might not be making good contact with the fuse box. Might wiggle them to see if the lights stop working again. HEAD fuse provides power to the headlight relay. No power to the relay means no lights. Helps to have a digital meter. I saw one at Harbor Freight for seven bucks USA money. Cheap. Just put it on dc volts and the 20vdc setting and go at it. 'Seven bucks. Can't buy a six pack for that.
#10
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Just wondering if you ever got this resolved. I am experiencing the same electrical problem(among others) with my convertible. So far I know the headlight fuse is good and everything else seems normal, just no low beams.
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