After a tuned port swap i have a few wirs i can't figure out where they go. I am not sure if they are for the dual fan set up or what, since i am staying with the single fan set up. 1 st wire is GRAY, goes to pin out D-11 in the ECM (A/C Pressure fan switch) where dpes this wire connect to? a relay ? i dunno ...........2nd wire is DARK GREEN goes to pin out B-8 in the ECM (A/C Signal) i haven't a clue on that one either........... 3rd one is DARK GREEN/WHITE goes to pin out C-1 in the ECM, can't figure that one out either. And also i have a light blue wire that slices off of another wire, if you look in the picture at the gray connector in the lower left hand you'll see a light blue wire and two purple ones and a yellow ,it splices off that light blue wire i think it's for the heater. Also i can't find a wire to connect to my fan switch temp. sensor what am i missing here? I got the harnness out of an 89' and my heat and A/C works fine. Anyone that can help me, i'de appreciate it alot...thanks...Dave

 

.........anyone ???????

 

See if you can trace the wires back to the ecm and figure out where they are hooked to. Try this site he has wireing digrams for 7730 and the 165.http://www.eecis.udel.edu/~davis/z28/

 

hELP ME FIGURE OUT THE LAST FEW WIRES PLEASE
Are you using the 7165 or 7730?

 

Don.... i am using the 7165 ecm. I'de really appreciate it if you could help me out on this one.

 

Well, it's a whole lot easier than what I'm trying to do. My harness was cut at the firewall (about 50 wires).

My 2 cents: take a multimeter, disconnect the battery, remove the connectors to the computer and "buzz" them out. You do this by taking the multimeter to the diode setting (or resistance) and connect one wire to the end connector of the pigtail (the one you're trying to figure out, say, green) and the other end, a green wire of the computer harness (there are only so many) and when you find the one green wire that'll "buzz" or give you zero resistance, you've found your wire. If none of them "buzz" it doesn't go to the computer. The computer harness has really tiny pins, use a paper clip (because it conducts) and stick it in there and clip the multimeter to the other end of the paper clip. HTHs.

 

I already know which wires they are from the ecm. I just don't know where they connect to on the motor/relay or whatever.

 

I went under the hood and looked around for the wires you listed. The light blue one I belive goes into the connector that goes to the heater. The fan relay switch is a black one. The gray you will have to be more specific about. The AC compressor has two wires going into it one dark green with white and one dark green with black. The Fan relays on the front also both have dark green with white going into them. Hope this helps a little.

 

Can anyone tell me where the fan relay swich is located I would REALLY be grateful.
Thanks,
Jodi

 

usually located under the hood on the drivers side on the fire wall. Near maybe 3 other relays. Try this thread it might help a little........https://www.thirdgen.org/techbb2/sho...+relay+picture

 

Try this one ECM drawings

Click on pages at bottom.