BodyGeneral body information and techniques for repairing, restoring, and modifying your car.
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Well check to make sure you're not hooking up to a ground. The wires of interest to you (on the body wiring) are the brown, gray and light green wires.
Brown is the wire labelled "E" on the third gen harness, gray is "D" and light green is "C". The light green wire isn't as thick as the other two. Brown should be hot when the ignition is on, gray gets power from brown whenever the controls are on any setting but off, and light green gets power from brown whenever the controls are on an AC setting or defrost.
There are two other wires from the body that aren't hooked up to the switch. Dark green and black. Dark green is "B" on the third gen harness and black is "A". Dark green is supposed to get a ground from black whenever an AC setting is selected. Unfortunately the 4th gen switch does not have any way of supporting this feature.
I would check to make sure that you aren't accidently using the dark green or black wire. This could cause the short if you are.
Couldn't a relay be wired up to get "B" and "A" to connect to each other by using the power from "C"? All you want is B&A to connect to each other when A/C switch is on, right?
Here's how. "C" is wired to both the a/c controls and this relay. When "C" is switched on by the A/C controls, it will also give power to the relay. When the relay energizes(has ground and power across it), it closes the switch inside and connects B to A.
Here's how. "C" is wired to both the a/c controls and this relay. When "C" is switched on by the A/C controls, it will also give power to the relay. When the relay energizes(has ground and power across it), it closes the switch inside and connects B to A.
Yah, I had thought of the relay. If you know where to find the relay, let me know.
I had a few extra from the LT1 swap and then a few more extra from the dash swap. Any relay meant for a car, with 4 wires will work, even 5 wires will - just don't use the 5th wire(87A wire). Any auto store sells them too.
if your car is a v8 and you have a v8 cluster, etc. you shouldnt need a box. but there are exceptions.
years of clusters. v6 cluster, ls1 cluster etc.
see if everything is right before you buy a box and still have the same problems.
an msd will not fix your problem either. one of their tach adapters might work.
all depends.
what motor and cluster are you running. etc... ?
yeah its carbed. but when i rev it, it seems so floppy revvin up... quicker then it should.
the guy could have lied to me about the tach being v8. it idles at 800rpm just like it should.
if it wasnt a v8 cluster, idle wouldnt be at 800. somethings loose or damaged somewhere along the line.
ive seen and done it strait to a stock tach before with no trouble.
good luck.
im having a problem with the dash, everything is ok. But for the bolts that hold the dash to the firewall at the top, if i have the farthest one on the passenger side and the middle one and TRY to put the driver side one in the screw doesnt even reach the dash. I have to put stress on it for it to go in, and i did. The next morning the passenger side dash bracket cracked and popped out.
ok i need some big help with the wiring up of my lt1 cluster i have read everthing i could find took down notes anything to get these to work but i get nothing none of my gauges will move i think after i cut out my factory connectors i had three wires left over that i could not find a place for maybe a dark brown and a green i think not sure but shouldn't i see something working ar least?
ok after rechecking my third gen wiring i have 2 dark gray wires another dark gray with stripe and a green wire with black stripe those wires are whats left from my factory connectors
dark grey i didnt use, but there was only 1 dark grey, there are a couple other grey wires they are for illumination but are more lighter then the dark grey.
im having a problem with the dash, everything is ok. But for the bolts that hold the dash to the firewall at the top, if i have the farthest one on the passenger side and the middle one and TRY to put the driver side one in the screw doesnt even reach the dash. I have to put stress on it for it to go in, and i did. The next morning the passenger side dash bracket cracked and popped out.
did you ever come up with anything on this because i test fitted mine yesterday and seen the same thing? but any way thanks for all your help roughskinjrz i seem to have the gauges working but the high beam light but im having the jumpy tach problem and i have tryed an ls1 and two different lt1 clusters and get the samething so i started on the headlight switch and now im hung-up on that my factory switch has a orange,red 2xyellow,gray,and white wire and the 4th gen plug was a orange,red,pink,yellow,and a gray or brown wire plus a thin black and gray wire but i figured that those two thin ones where for the light but maybe i was wrong!
[quote=tpiroc;1736140]Alright folks, there are some good wiring resources floating around here to wire up a 4th gen gauge cluster, but none of them seemed to match an 85 set of plugs properly. The colors of the wires are right, but not the sequence. So, I double checked ALL the wires and sure enough the colors are right, so here's a new guide for an older style connector, namely an 85 TPI dash;
quote]
Where did you get this and do they have one for a 87 Firebird.
where might I find these plugs...I'm trying to chase down my tach wires to hook them to my HEI distributor. When I got my 88 gta it had no (305) motor and no wires were labled
Ok I need help with my 4th gen headlight switch/dimmer wiring... I have a 92 camaro, and the dash I got came out of a 2002 35th anniversary ss. So far these are the wires from the 3rd gen to 4th gen that I have...
3rd gen headlight switch colors
Red
Orange
Black
Brown
Yellow
Green
White
4th gen headlight switch colors
Red (x2)
Orange
Black
Yellow
Grey
Brown
Then I have my dimmers...
Third gen dimmer colors
Light yellow?
Purple
Black
Grey
are you still a member on here i seen some of your work with the speed cluster swap and i had a few questions if you are still a member let me know pls thanks Ron
