1989 5.7L TPI AT a.c. deleted, egr deleted, aftermarket dual fans not wired correctly I'm assuming.a car does run and drive. I'm fixing the hack job wiring. Please use the numbering system I've provided to help keep it simple for me wiring is overwhelming for me. I thank you for your help !

1. - Green/blue. With connector but is only 5 inches long. Pass.side

2.Pinkish red wire with connector. pass. Side

3A. In front of pass. Valve cover

3B. In front of pass valve cover.

3Ba.pass. valve cover.

3Bb. Pass valve cover.

4. Windshield wiper resovoir driver side.

5. Driver side fire wall Guessing engine temp guage there is an aftermarket one hooked up but unsure if its grounded properly but does work.

6. Red striped wire and solid black connectors cut hooked into aftermarket fans which dont work.

 

I think I can help you with a few of these, #2 is your EST connector which you disconnect for when you set base timing and used by the computer to control timing I believe, 3B looks like the plugs for your AIR diverter and maybe the connector that would go into the front of the AC compressor and #4 looks like the plug for your charcoal cannister. I'm going to assume your AIR emissions stuff is deleted along with the air conditioning which you mentioned.

 

I have the same year, here's what I found:

This looks like 1, goes to ac stuff:



For 3, the AIR smog pumpalator stuff is by my pinkie finger, my thumb and forefinger are holding the ac connector that goes on top, and my middle finger is pointing to the rear ac connection:



This looks like 4, goes to charcoal canister:

 

Thanks guys where does the est connector plug into or does it stay unplugged ?

 

It should have a matching type plug, here is mine it’s an 88’ GTA.



Should be right near the top of the blower motor housing.

 

Thanks guys, anyone know about number 5 & 6 ?

 

I looked but didn't find anything useful. Maybe take some new pics that kinda show where they're going from / to and we can take another look? My driver's side firewall area is super oem looking but down by the battery and fans is sort of a rat's nest.

 

Nr. 1: A/C, plugs to the switch at the accumulator.

Nr. 2: This SHOULD be unplugged, IIRC this is the fuel pump test port (someone correct me if I am wrong).

Nr. 3A: Connector for the high pressure cutoff switch at the A/C compressor

Nr. 3B/3Ba/3Bb: Green and white connector are for the air pump diverter valve, seems that someone has removed it along with your A/C. The black plug is the connector for the A/C compressor clutch.

Nr. 4: Connector for the charcoal cannister.

Nr. 5: It looks like the connector for the temp gauge for the gage cluster, but the wire should be dark green for 89 and not light blue... oil pressure sender wire color should be tan. Maybe the wire was repaired somewhere in the wiring harness and it was dark green before? The pic is very blurry, maybe you can post a better pic of this thing.

Nr. 6: Looks like the connector for one of the original coolant fans.

 

Number 4 looks like an abandoned hood open safety plunger for an alarm system.