Neutral Safety Switch Polarity?

[Moparfiend]

I am assuming there is no polarity on the connection to the transmission on my 1970 Sat’s neutral safety switch/reverse light harness. Correct?

Looks like brown center is the neutral safety open in gear and short in park and neutral?

So the other two (blk and blk-t) must be power and reverse lights?

Thank you in advance for providing clarity.

 

[65CopCar]

Correct

 

[Moparfiend]

So new cable and new switch no bueno. I did the test with the motor not running and had it in reverse with the lights on and ignition on.

I have power to the neutral switch as measured at the engine side bulkhead D. But no voltage at C ie switch output when the transmission is put in R.

I don’t know what “makes contact “ or how inside the transmission. I assume it’s like a mechanical slide? I also assume the engine doesn’t need to be running?

So in summary trans in R, ignition on/engine off, 12V @D no voltage @C. New harness and switch.