No power going to fuse 20?

[KemarRoach]

I recently swapped my 89 m20 with another m20 engine and swapped out the engine harness and ecu

Not sure if the issue was occurring before the swap but now I am not getting power to fuse 20 (the ac and blower controls) my windows etc
If I pull out fuse 10 I somehow get power to the windows and sometimes will get power to the ax controls and blower will turn on

I’ve check my ground and pulled apart dash looking for any rotted wiring

There was an aftermarket radio installed that he pulled out before I picked up the car. Looks like he just cut it out from the wiring.
Honestly stumped on this. I checked even my ground going to the starter and swapped around relays thinking they were bad and did not fix the issue.

Any help appreciated !

[fixedwheelnut]

Power to fuse 20 and 19 come from the Unloader relay K7, that relay earths out via the starter motor , check that the Black/green wire has been connected to the starter motor correctly.

wiring diagrams are in the Wiki pages https://www.e30zone.net/e30wiki/images/ ... bution.pdf

Start circuit https://www.e30zone.net/e30wiki/images/0/00/Start.pdf

You can just see where the thin black / green wire attaches on the starter motor here about 11 )'Clock position on the solenoid, the blurred stud