manbeast

So there is this plug under the steering wheel that I found unplugged. When plugged in it keeps the electrics on like heating, the idiot lights, and when i start the car and have it plugged in and take the key out it will stay running. weird right? Ill have pics up tomorro. meanwhile anybody have any idea what the baby dust is going on here?

satch

iTrader: (1)

S4 or S5, and how many wires are in this plug and what are the wire colors?

HAILERS2

Seen this problem on this forum before in the last yr or so. You have coupled a male and female plug that should not be mated to each other is the problem. One of those plugs is fed from the battery bus in the interior and is backfeeding a circuit on the IG1 buss in the interior. Leave them disconnected and find the proper mate for those two plugs.

IF memory serves one of those plugs is for the ignition switch "courtesy light" and should not be mated to what you have it mated to.

Solution: state on this thread the wire colours of each plug then we can tell you what they go to in real life.

The plug for the courtesy light/ignition sw is colored Blue/Red and Green/White. There is a short harness who's length is about a foot or so that reaches from the ignition switch to the plug it mates with.

The other plug was?????? I forget. Cruise Control or a plug only used on automatic cars but stick cars also have that plug unused. I forget exactly. Guessing on that one.

Is the color on that one Black/Yellow and Yellow? The two wires in it is what I mean? If so.......that one goes to the clutch switch IF your car has a cruise control. Cruise control cars have a clutch switch that gets TWO electrical plugs attached to it.

manbeast

its a s4 one of them has a 1)yellow and a 2)black with white stripe. that one is also coming out of the same wiring harness as a wire leading to the brake under there

looks like its used for the brake lights or something. the other one looks like its leading to something in the steeringwheel...horn?

i dont have a horn. the person who had the car before me put a different steering wheel on doesnt have a horn feature. kinda lame. but those wires are 1)blue and 2)green with white stripe.

it looks like what HAILER2 described about a foot couldnt see any red on the blue wire i am looking with a flashlight cuz it dark out right now.

The clutch has a connection to it but only one no other optional plugs. yes it does have cruise control.

hmm my cruise control works except i notice when i take it out of gear when the cruise control is on it stays on and revs all the way up and starts beeping.

of i course turn the cruise control off immediately. baha. I will have further info tomorrow asap. thanks for the help so far.

i hope to get this figured out so i know exactly whats going on cuz ive been having trouble either keeping the battery charged or weak starter lately and Ive been cleaning grounds and connections like crazy. there are a ton of loose wires in this car. laaaaamme

manbeast

Im going to start double spacing as well. I just noticed how hard it is to read compared to hailers post. haha

HAILERS2

Sorry, but I was incorrect. It's the BRAKE pedal that will have two plugs on its switch, NOT the clutch switch like I said before.

Cars without cruise have but one switch on the brake pedal.........cars with cruise have two electrical plugs on that brake switch.

On your BRAKE switch you should have one plug that has GW/WG wires in it and the other elect plug should have B/Y and Y wires in it.

The CLUTCH switch has but one plug and its wire colors are B/Y and Y/L.

So none of the plugs I just listed for the BRAKE and CLUTCH should be going to the ignition switch courtesy light.

I still think there is another plug down there meant for only automatic cars and gets no connector if you have a stock stick car. I'll look a bit further. That's from memory of what was wrong with another fellows car a year or two ago.

HAILERS2

From what you described in you last couple of posts..............I'd say you have the wrong plug on the clutch pedal. Because if it was the right one, if you step on the clutch pedal it will pass power on to the cruise control unit and make the cruise turn off.

The black/yellow wire on that plug is power and if the switch is made then power passes on to the Y/L wire and on to the cruise control unit to turn it off.

HAILERS2

Might note that the clutch switch itself has a short pigtai with two wire on it and a connector on the other end. Those two wire colors on the pigtail are not the colors I mentioned above. the colors I mentioned above are on the elect plug that connects to that pigtail.

JPGs of the clutch and two stop light switch plugs attached out of the wiring manual that's free and online.

Also attached a jpg of the ignition cylinder plug that might help. I believe a short harness of about a foot goes from the cylinder to this plug. Might have lost that short harness???????????

manbeast

I couldnt find where it goes the brake and the clutch both have plugs but theyre taken by other plugs which look like they belong considering how close they are. I think the plug thats in the same harness as the brake is an optional for if i had automatic. the car runs fine. the battery just hasnt been holding a good charge lately so ive been trying to find all the wiring issues it may have. new battery new alternator new battery terminals cleaned and rewired some but not all because of not knowing where any of the unplugged wires go. thanks for the info hailer I am going to read up those diagrams and figure it out.

HAILERS2

The color of the wires on the clutch and brake should be the exact colors that are in the two jps I attached.

Two plugs on the brake switch and one on the clutch pedal.

Please look carefully and tell me the exact color of the ?? mystery plugs two wires. B/W and Yellow?

I suspect your clutch pedal has the wrong plug on it 'cause your cruise does not disengage when you depress the pedal.

I remember solving this other persons same problem by having the two wire colors of the plug then just going thru the wiring diagram pages that show the plugs. It didn't take very long to do that. Just looking at each page and only looking at the plugs that had two wires. Easy peasy.

HE had the ignition switch courtesy light plug connected to the wrong plug and that was what was causing the backfeeding of the batt buss to the IG1 buss.

HAILERS2

https://www.rx7club.com/showthread.p...CYLINDER+LIGHT

The guy in this thread had the same problem you do/did. Ignore most of the thread and go down to post #24 and he explains what fixed it.

There is a thread prior to this one where I ID'd someone elses similar problem and that's the one that I can't find..........yet. Part of the problem is I log in as HAILERS on some threads and HAILERS2 on later threads and it makes a search twice as hard.

HAILERS2

https://www.rx7club.com/showthread.p...CYLINDER+LIGHT

This guy had the same problem as you . See the last couple of jpg he attached. He had the clutch or brake plug connected to the ignition key cylinder plug causing his problem. Unfortunatly I had stopped looking at his thread 'case I see no reply from me explaining whay the car kept running. Back in '03.

Ignore most of that thread and just look at the last couple of HIS jps.

HAILERS2

https://www.rx7club.com/showthread.p...running&page=3

Post #60 and on in the thread above is worth reading. Same problem as you have. Igniton key cyliinder plug connected to the clutch switch I believe.

Note: the first picture he has in post #62 shows part of the short harness that runs from the igniton key cylinder light to down below where it connects to is mating plug.

manbeast

awesome great resources. ok so here are the wires their colors and locations- blue/red and yellow/green is the random loose plug. black/white and yellow/blue is plugged into the clutch sensor thing. (actually the plug that is connected to the clutch has three wires (2 of the yellow/blue.) but the end of the plug only has two female connnectors. like a ground or something.) and a yellow and black/white plug thats in the same harness as a plug thats connected to the brake. note that when crusie control is on and i push the brake cruise control will turn off. think im close to figuring this out.

HAILERS2

EDIT: posted by mistake. Later I'll post again.


EDIT: This question is NOT meant as a personal insult of any kind whatsoever........................Question: is it possible you have a color blind type problem in determining the difference b/t yellow and white???? This is a serious question and NOT a insult etc of any kind. The reason I ask, is that the ignition key cylinder light has one L/R wire and one G/W wire. So the G/W made me think your having problems with the color white vs yellow.

I say this becaue I see no L/R and Y/G wire combination in the wiring manual.

Again, not a personal slight of any kind. Just thought maybe you have a color determining problem of some sort????????

If I'm causing you more problems than you need, just say so and I"ll stop replying. That happens at times.

NOTE: Most of the L/R wires are hot 24/7 and are attached to the battery buss. IF a L/R is mismatched with a wire in another plug, and that other plug (wire opposite the L/R) is routed to some buss other than the batt buss, then you'll end up powering that other buss via the batt buss and that results in cars that won't turn off with the key.

HAILERS2

Here is an example of why I thnk your seeing white when the color is really yellow.

The clutch switch should have a B/Y and a Y/L wire on it. You say you have a B/W and a Y/L on that clutch.

See what I mean? I think either the color on the wire is faded to a more white color than the original color yellow or you are having difficulties determining the difference b/t white and yellow.

Also look at attached jpg for the clutch switch. You'll see s DIODE assy to the right of it with the colors Y/L and Y.

I believe you mentioned your clutch switch has an extra wire (I forget exactly how you put it) but that is understandable since the diode assy should be attached to the clutch switch to prevent backfeeding.

Later. Tomorrow I'll look at my 87 cars clutch switch and see how that clutch plug is arranged with the diode assy. That might clear up something.

For sure, any L/R mismated will cause backfeeding problems. The ROOM fuse is the one that handles most of the L/R wires in the interior. Pulling that fuse on a car that keeps running might very well make the constant running engine die (when the key is out and it keeps running is what I mean).

HAILERS2

Here's another example. You say your brake switch has a Yellow wire and Black/White wire on it.

The attached jpg shows it should have a yellow wire and a Black/YELLOW wire in its plug.

See where I'm coming from????????????

Maybe have someone else look at those two wires and see if they come up with the same colors as you do. OR maybe the yellow has faded to near white??????

HAILERS2

This jpg is from one of the threads I attached in a post above.

HE took a picture of two plugs mated together and asked "why does the engine keep running when I plug these two plugs together??"

Well they should not be connected together. The L/R with G/W is meant for the ignition key light.

The Yellow with the Black/Yellow is for the brake swtich and does not get mated to anything but one of the two receptacles on the brake switch.

Mate those two together and you now have the L/R battery buss fed wire backfeeding the Black/Yellow IG/1 wire which we know feeds the igniton system (coils, injectors etc).

So you can now see why these two plugs NEVER get mated together.

The pure yellow on both the brake and clutch switches leads to the cruise control unit and carries power when either of those two switches gets made (made when pedal is stepped on).

IanS

iTrader: (4)

I remember having this problem. Holy **** what a giant pain in the *** to figure out. I remember leaving my battery + cable loose on the post so I could pop the hood and unplug that battery every time to kill the engine.

HAILERS2

Yeah, IAN is the guy in the last thead link I posted.

Took 63 posts to figure out what the problem was (key cylinder plug connected to what should have been the clutch plug causing L/R to backfeed a interior fuse buss that normally would not have power with the key out.

Ever since that thread and I hear of a engine that keeps running..........that key cylinder light plug comes to mind. It's helped out on a couple of threads since IAN's.

A lot of the time I take the wrong tack on a thread and go off in the wrong direction and it takes forever to figure things out.

This thead we're on seems to be the same problem but MANBEAST's colors don't match any of the plugs in the car but only because I think he sees white when it might be a faded yellow instead. Put Yellow where he says White and then the plug colors match the wiring of the car.

I forgot to take that picture of the diode assy wires like I mentioned in a post above. Dark now and the cars not at this house.

manbeast

haha thats funny you mention it I actually do have trouble seeing colors at times. its weird last week i was looking at my girlfriends parents new car and
i swear at first it was green and i said nice green paint job and her dad said uhhh thats purple I adjusted my eyes and took a second look and wala it was purple.

colors with kind of pulse in and out from two different colors. it usually happens with light colors yellow actually being the worst actually haha.

I havent been in to the doc to get it checked on becuz its never bothered me much. but i got it figured out now the plug in the same harness as the brake plug
goes into the clutch.

so now it disengages when in cruise control instead of revving up. and i have two other plugs that are loose but im not worried about those they havent messed up any of the functioning of the car.

possibly alarm system or the optional automatic clutch plug. one is tucked up in the corner under the dash right next to the clutch and the other is that longer one that you can see hanging right below the steering wheel.

they are both female plastic plugs with the male metal pieces inside em. gxl had the alarm system? I think i read that somewhere on this site.

manbeast

looking at the pic you posted of the two plugs with the colors showing on the wires. is the top one a longer wire that you can see hanging below the steering wheel if unplugged? Ill have to look when i get home but i think those are the same colors as that one. do i need the ignition key cylinder light plugged in?

HAILERS2

Ignition key cylinder light is just to help you insert the key in the swich. Not needed at all.

I've long since lost the two wire harness that connects that plug to the plastic surround that holds the ignition key cylinder light and all my cars run just fine.

Talking the two wire plug that has a L/R and G/W wires. Just don't connect it to anything and all will be well. In one of the threads I posted above I included a page out of the parts fische showing that short two wire harness that your probably missing.