Good morning guys and gals.

I have a 94 Sc300. The car is in need a some serious love. The reason that I need wiring help, is because my car was wired by a guy that left the job unfinished. I took he harness out of the car and started repairing what was left unfinished.

I have read so many of the threads on this site and supraforums, But I am confused (More like lost) on a few wires and where they go. I am hoping that you guys can help me out.

Let me say thank you to Lexsingle for the info that he has already provided.

The two connectors behind the battery (EB1 & EB2) have wires coming out of in that are not connected to any wires. I did find some info on here. What is causing me a problem, is that the wires go to a plug called C1. I dont know where this plug is. So this is my first issues.

From the post that I read here on CL, It said that:

8 wire plug EB1

• Blue –Blue from old AC connector
• White – White of C1 plug
• Black/Red – Black/Red of C1 plug and Black/Red of EB2
• Black – Black of EB2 and Yellow of old alt plug
• Black/Orange – Black/Orange of C1 plug
• Black/Yellow – Black/Yellow of C1 plug

 

EB1 pin 4 (Black/Yellow)goes from 30 amp EFI fuse to small ecu connector, pin 33 BATT.
EB1 pin 8 (Black/Orange)goes from EFI main relay to small ecu connector pin 24 M-RELAY.
EB1 pin 6 (Black/Red) goes from ABS relay pin 5 to data link check connector pin 23
EB1 pin 1 (Lavender) goes from ac clutch relay pin 3 to ac clutch pin 4
EB1 pin 2 (White) goes from ac clutch relay to small ecu connector pin 23 ACMG
EB1 pin 7 (Brown) goes from ac temp sensor to Il1 pin 1 and ac clutch pin 1
EB1 Pin 3 (Black) goes from starter relay pin 1 to various places depending on if the car is auto or manual. Let me know if you need more info on that one...


I think that is it.

 

pin 1 blue a/c compressor
pin 2 white a/c clutch magnet relay to ecu
pin 3 black clutch safety switch
pin 4 black / yellow BATT to ecu
pin 5 blue /red trac
pin 6 black / red WB in diagnostic port
pin 7 brown a/c compressor
pin 8 black / orange M-REL to ecu

 

would you happen to know where the brown, blue w/ grey dot, and white wire goes?

 

What is WB?

 

Check my edits

 

WB in the diagnostic port it's jumped to WA with a metal clip.

updated my list

 

The is a white wire on the three wire connector Eb2?

 

Alternator.

 

What is the c1 plug? And, where is it located?

Is it the Ac plug?

 

There is no C1 that I am aware of. There is a 1C plug, but not on the engine harness AFAIK. There are also a couple XC1 plugs, such as EC1, BC1.

 

From your notes, it looks like they are calling the small ECU connector C1.

 

From the notes that you have posted, it looks like it would be the A/C connector. Noone of these wires have to go to any body plugs, right?

 

No, check again, my notes say the black/yellow and black/orange wires go to the small ecu connector where yours says C1. Also, my notes say the the white wire goes to the small ecu connector where yours says C1.

At any rate, ignore the C1 stuff. It is not correct, or applicable.

I consider the connectors you are working with to be "body connectors". Even so, I don't think they jumper to any other body connectors except where I listed multiple connections.

 

I didnt understand Pin 7.