6. Cylinder duster is now a 340 ignition issues wants to start when you let up on the key
Your car's starter relay is in the correct postion.
Maybe or maybe not the correct orientation.
Your car was manufactured with the seatbelt interlock, and still has the bypass switch.
You may find additional parts of the system on the car.
from the 1974 Booklet explaining the system
https://mymopar.com/browse-mtsc-by-model-year-1974/
That may be why the J3 wire isn't getting power with key in start. Eitehr the system failed, or it wasn't properly disconnected/bypassed.
See the posts here about the early '75 versions from @Bugman and @67Dart273
https://www.forabodiesonly.com/mopa...to-coil-while-cranking.493970/post-1973499212
Those are the guys that can help you bypass that thing properly.
Your car's starter relay is in the correct postion.
Maybe or maybe not the correct orientation.
Your car was manufactured with the seatbelt interlock, and still has the bypass switch.
You may find additional parts of the system on the car.
from the 1974 Booklet explaining the system
https://mymopar.com/browse-mtsc-by-model-year-1974/
That may be why the J3 wire isn't getting power with key in start. Eitehr the system failed, or it wasn't properly disconnected/bypassed.
See the posts here about the early '75 versions from @Bugman and @67Dart273
https://www.forabodiesonly.com/mopa...to-coil-while-cranking.493970/post-1973499212
Those are the guys that can help you bypass that thing properly.