S12 ca18det brief pointers

[30psi]

I removed the engine loom from the S13. The I followed where the engine loom connects to the chassis loom, it goes from the left of the car inside the wings, under the slam panel through to the other side and to the box with the 3 green relays.

I then removed the wiring that wasn't needed in this loom to basically leave the 3 green relays and long wires that lead to the plugs that connect to the engine loom.

The 3 green relays power up the ECU, the power transistor and the fuel pump if i remember rightly.

You then need to work out which wires need permanent and switched power. Easily enough those wires are red and black, with a few red wires and a thin earth wire.

There are some other nice to have things, like the starter signal wire (will help it start quicker) and getting the rev counter to work.