Question for those of you who are running the P75 ecu

[EricW]

I have all my wiring sorted out on the conversion harness but pins A21 and A22 on the OBD1 plug. What pin on the OBD0 plugs do i need to run these to wires to?

Also does pin D2(brake switch) need to be connected to anything?

[carotman]

I'll have to check my conversion harness for pin A21 and A22. However, I'm sure you can leave the brake switch out.

[thegreatdane]

A21 to the igniter/ignition control module
A20 is to the purge solenoid

[EricW]

A21 to the igniter/ignition control module
A20 is to the purge solenoid

I know what they are, I need to know where to run them on the OBD0-OBD1 conversion harness.

[thegreatdane]

???? You havent got any ICM on your pre-OBD wiring and you dont have the purge solenoid either (unless you have 88-89 injection). So therefore there's nowhere in the stock ecu plug to put those wires.

In case you have 88-89 injection the purge cut off solenoid should be on pin B2.

[EricW]

Ok, thanks. I'm just trying to minimize the problems/codes i will have when i finally get everything done.