Dwax13

Ok guys i have some wires that are just kinda sitting around and i would like to know what they are used for, if i need them or not and if i do where do they go?

-by the way its a 86 trans am tpi the owner i bought it from said that he had swaped the 305 tpi out for a 350 tpi.


Ok this is on the passenger side up by the headlight it pretty thick guage wiring one goes to a ground and the other to a relay and it has some sort of connector on the end of the one wire.


Next i have these wires most are green in color one is grey they are coming out of the firewall of the car, they have connectors on the end.

there are a few more to come.

Dwax13

anyone?

theNMBR27

more details about the car please. was anything removed like a/c, smog etc

Dwax13

the ac was remmoved but some of the stuff is still there for it, i have the heater core bypassed and it still has all the emissions stuff hooked up.

theNMBR27

the black wires are most likely grounds and which side of the fire wall are the green wires coming from. your engine and head light harness are on the drivers side, passenger side is mainly for the a/c

Twin_Turbo

iTrader: (25)

top pic, large connector is for the 2nd coolant fan, goes on temp switch on pass side head. The heavy gauge black ground wire and relay are for that fan too. It's relay controlled, switching current loop is closed by grounding of the temp switch in the head.

Twin_Turbo

iTrader: (25)

That bundle of green stuff could be head lights, maybe horns + something else...cruise??? Is there something that doesn't work?

Dwax13

Twin_Turbo i only have 1 fan and i have it on a manual switch so can i just pluck the wire out of the relay?



Ok what does this orange wire conect to my radio works and so do all my speakers but my radio has no memory and i cant set the clock because it resets everytime i shut the car off?

ASE doc

The orange wire is clock memory. It not having power is why your clock resets every time you shut off the car. It is powered by the courtesy fuse. Is the fuse blown?

Also, having your fan powered by a switch is a good way to accidentally burn up your engine or your electric fan motor or both. The fan was designed to be thermally controlled using relays and thermal switches. Some were controlled by the ECM itself. These fans were not meant to run the entire time the engine is running nor do they cool very well when we forget to turn them on.

I would strongly suggest that you repair your factory fan control system rather than scrap it. Its a simple system and if you want to lower fan on temp, its as easy as swapping out the fan temp switch. Having your fan work as it was meant to will help prevent an accidental overheat.

Dwax13

well the fuse is good i just dont know where to hook it up in the radio harness or whatnot. and yes i understand what your saying about the fans but the po did a engine swap so im not to confident he hooked up everything the right way.

Dwax13

???anyone

ASE doc

From the photo it appears that you have an aftermarket stereo? The yellow battery+ wire should provide constant power to the unit. It powers the amp and also provides memory. Be sure that the yellow wire has constant 12v. The orange clock memory wire will not handle enough current for this pupose. You'll need to replace it with 16 gauge wire. Connect the 16 gauge wire where the orange wire attaches at the fuse panel, then connect it to the yellow wire. The red wire should have 12v with ign on.

The fan control system is fairly simple. It uses a temperature activated fan control switch that is installed in the passenger side head, between #6 & 8 spark plugs. This switch activates the fan relay, which in turn activates the fan. There are also a few aftermarket fan control systems available. They are all reasonably easy to install.

Dwax13

ok thank you so much i got the radio all figured out now.. another question what do these 2 wires do and how do i go about hooking them back up? they seem to be important there thick orange wires along the drivers side.

Dwax13

do they have to do with the fuel pump?

Dwax13

please if someone knows i would greatly appreciate it..

ASE doc

They are probably the wires that are intended for the fuel pump oil pressure safety switch. I would strogly suggest that you find a good wiring diagram for this car.

I could do more for you if i was at work where i have mitchell. Here at home i cant really help you.

Dwax13

Well in the process of my tpi to carb swap these wires were coming from down by the transmission. Are they tcc lockup and speedo? and for my speedo since its electric i assume since its a 86 i removed my computer but left the vss box can i make my speedometer work somehow still?

rgarcia63

The Speedo doesn't need the ECM to work, but the ECM does need the speedo. Because you have no ECM it's a moot point.

Dwax13

so can i connect the wires that run from the tranny to the vss box somehow and make it work?

rgarcia63

I would think that with a twin turbo you'd need the dual fans, but if you're good with one, pluck the relay as well.
If your going to stick with manual operation the stock fan won't last, they're not designed to stay on more than a few minutes at a time.
I'd suggest aftermarket fan(s) designed for that type of service.