Sparks/Going short when connecting Pin 15 (c101) with e36 Pin 15

[mr_zvirgzdins]

Hey guys,

Doing my swap and even with todays information overflow cannot get everything right.

E30 with e39 m52b25 engine/transmision (ews deleted) + e36 harness.

Soo. C101 pin 15 wasnt connected and when it
was doing and starter the engine - it went short, sparked big time.

And I have nooooo idea what the heck isnrhe problem and how to look for it.

Please help 😀

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