No power to starter relay.

hey just throwing this out there but if your car is a 74 ( the only year they used the seat belt interlock relay ), is there a chance it has not been bypassed on your car?, if it hasn't that could be your problem, I had the same issue on my sons 74 Duster, jump the solenoid and all is good?, the relay is the little silver box with a red button on the d/s fender, jump past it and see what happens, they fail just like that