I need help with the stock wiring relay as call me stupid Im use to the princess auto ones which are like 87, 87a and so on. Can someone breakdown the stock oval relay like in the pictures to me like that as I want to wire my fuel pump properly once and for all. Also I have to figure out my fan issue as they are not turning on at all even when I tell the PCM to be on. I think the wires are either done in the wrong spot or I need to run a new wire from the PCM to the relay. Either way I need it done soon.

Any help with be appricated for sure.

 

Can't help you with the fuel pump as mine is mechanical. But the wiring of the relay for the fan is as follows:

Black/red wire connects to fan positive.
Orange wire connects to fused battery source.
White wire connects to ignition source.
Green/white wire connects to the thermal switch (coolant fan switch).

Hope this helps.

 

can you explain the A, D, C , E, F to me is what Im saying so I can hook it up properly. Thats the part I cant relate to is all. Thanks

 

I'll try. First you need to understand how a relay works. A relay simply allows you to control a high amp circuit using a low amp circuit as a trigger. So if you look at the picture on the relay, you will see that E is connected to C by a switch in the middle. When you pass a low amp current across D and F, the switch is moved magnetically, I believe, to connect E and A and now C is disconnected. When these relays are used to control a fan, the C terminal is not used.

 

Never seen one of those relays myself, but if it's what you're asking - the translation to the standardized terminal numbers you are used to would be:

A = 87
C = 87a
E = 30

D/F = 85/86 (interchangeable)

 

^ Hes right

Hes a diagram of how GM did it, pins and colors

http://www.austinthirdgen.org/mkport...ta_sensors.jpg

 

Hey pocket how did you wire the fans in the harnes as its one that you made and I cant get the fans to turn on at all. Even when I use HP tuners to turn them on all the time.

 

Treefiddy thanks man as your a lifesaver. Now I can tidy the engine bay abit

 

Havnt had a chance to do this yet but Im gona get new relays as well to make sure everything is good. I still have to redo the trigger wire as mine doesnt have one for some odd reason

 

Thats for a 90-92 car, your 89 would run the fused 12v leg of the relay through the C207 instead of the C100

 

Thanks man I will have to trace down whats goin on here with the car