Update:
Not getting power to fuel pump and only 10v to 85 & 86 (coil) on the fuel pump relay. Interia switch also metered closed. 20A fuse feeding pump has power.
Sorry Don, I've been off drag racing.
It only takes 4-6v to activate that relay coil, so I wouldn't focus there.
How did you check power at the pump?
If you have access to the pump connector,
-measure across the pump,(With the relay on)
-Then measure cross the positive side (with the relay on) (positive battery post to the positive side of the fuel pump)
-repeat on the ground side.
If you measure batt voltage across either side, leave the lead on the battery and move the other lead from the pump towards the battery terminal that the other lead is on. (activate the relay every time you measure)
When it changes from batt to zero across the side of the circuit you are on, the bad connection is between the last bad measurement and the good one.
Hope that makes sense.
Good luck.
Cheers