QUOTE(mtndawg @ May 16 2019, 09:42 AM)
Yes the PO had 3 and 4 connected. I’m not getting power when I ground 3 and Pin 13 is not showing 12v when the key is on. Seems like something is different on the ‘75 car?
The relay board is the same on all years. Power to pin 1 of the FI connector comes from the power supply relay. You should have 12V on pin 1 with the ignition switch on. Careful as the 12V on pin 1 is not fused. The power to the fuel pump relay coil is also the power supply relay and pin 1.
Do you have power at the 25A fuse? This is for the fuel pump relay.
In your picture with the 14 pin connector apart, it is assumed you have the battery NEGATIVE terminal disconnected. There are no fuses between pin 12 and pin 14 wires to the battery.
Here's a diagram of the relay board from Pelican showing wire colors.