74Challenger
I already know what is the brain ( control unit ) just got than my blue unit got damaged. I have a couple offered but they are white box. I'm still trying to catch a blue box and if not then will take the white box what suposelly is for manual trannies. However I know that they have been found on auto tranny cars. everytime I catch a 74 underdash harness on ebay, I ask to seller what car and tranny came out.

Pink
yes, thats the seat sensor.

FSM manual for trouble shooting, here is posted the interlock section ( with a link to a video at the end )
http://wichargerguy.proboards101.com/ind...amp;page=1#7583


With a Charger born in Chrysler assembly plant in Valencia, Venezuela