Please help me troubleshoot power door locks

[AndresInHouston]

I have an 81 El Camino I just purchased. The door locks are not working. I had an alarm\keyless alarm installed and the tech told me it was the relay. I had to order the relay but while I wait for that part, I would like to know if anyone here knows what else I could check. Also, the labeling on the fuse block is almost gone... anyone have a pic of a fuse block that has labels you can still read? Seems it should have a circuit breaker for power acc, but I cannot tell where in the fuse block it should be inserted. Or does this car have a separate convience center where that would be located?

Thanks,

Andres