
1991 BMW 325i Diagnostic Plug Pinout
Is anyone able to positively identify which signals can be obtained from the pins in my E30 diagnostic port? I have pins 1, 6, 7, 11, 12 , 14, 15, 16, 18, 19, 20.
I've found conflicting information online. I know for a fact that pin 20 is engine RPM.