E30 engine swap

[Racer75]

Hi guys, i have an e30 318i chassis with no engine but all wiring looms are present as engine and gearbox only have been removed. Car was an automatic to start with so how hard is the conversion to an M20b25 manual?
Will I need different wiring or mess with the wiring because I am defo not confident with that. I should also state that I have read up on transmission swaps aswell.

Cheers

[Speedtouch]

Depends what age your 318i is. If it's a facelift, the wiring loom should already be in place.

[daimlerman]

As your car was an auto,and I guess you are fitting a proper gearbox,you will need to trace and remove the autobox's start inhibit circuit.
Start behind the glovebox,you are looking for a black/yellow wire,at the point where it is interupted by a plain black,remove the two plain blacks and join the two black/yellow's together.Then carefully trace the two blacks to their source and remove that section of loom entirely.Where this section of loom attaches to the autobox selector,you will be able to seperate out the reverse light switch part of the loom.
Do not cut any wires,it's all plug in.....