s54 no crank issue

[Andrew325is]

Can you post photos of your wiring of the starter? Do you have your grounds connected? Which fuel pump relay are you using?

[two240s]

On the starter you should read battery voltage on the 50 in the Start position ONLY regardless of if it is connected or not. The 50 is the B+ feed to the starter solenoid, when it gets B+ the starter will crank. Based on your description it sounds like you have some wiring problems. What DMM are you using? The fact that you are reading 0V when it is connected and 12V when it is disconnected is strange.

DMM? multimeter?....a radio shack one that I've used for years

I know...I'm really confused. Another strange thing is that when I disconnected the 50 terminal and checked for voltage with the key turned, the fuel pump would run constantly instead of just priming

[YosemiteSam]

On the starter you should read battery voltage on the 50 in the Start position ONLY regardless of if it is connected or not. The 50 is the B+ feed to the starter solenoid, when it gets B+ the starter will crank. Based on your description it sounds like you have some wiring problems. What DMM are you using? The fact that you are reading 0V when it is connected and 12V when it is disconnected is strange.

[two240s]

I had the terminal 50 and 30 confused in my head. Edited original post for clarity


anyone?

[two240s]

Finally getting to the point of firing up my swap. Having a no crank issue...no clicks or anything

88 m3 using andrews adapter harness
zf320 with e36 m3 starter

All other electrical on the car works fine
12v at terminal 30 on the starter

With the terminal 50 disconnected I have 12v to ground with key in the ON position and START position

Terminal 50 connected shows 0v with key in the ON/START position

Jumped the solenoid and starter kicks over fine

What am missing?

Should the wire on terminal 50 have power in the on AND start position?