Gas gauge not working? I think I fixed it.

Picture 1
shows the variable voltage regulator I ordered from China (cost $1.15 delivered ) .


Pix 2
Is the back of the dash board cluster. I actually removed a piece of plastic to the left of the hole to be able to align the regulators adjust screw with the hole in the dash


Pix 3
shows the placement of the hole I drilled in the dash


Pix 4, 5, 6
shows the wires attached and the board is tacked in place with hot glue


Pix 7
The adjustment screw is placed behind hole so I can adjust the regulator without removing the cluster.


Pix 8
Wires run thru the hole I cut in the metal can.


Pix 9
Orange wire is + output of adjustable regulator. Soldered to fuel gauge side of cut trace
Orange/wire wire is – output of regulator soldered to ground


pix 10 and 10b
blue wire is input to regulator. It can be soldered to any +12 vdc source. I chose to solder it to pin 1
on the pin connector.
Blue/white wire is – input. Attach to any ground




Pix 11
shows 5vdc regulator still feeding temperature gauge. I also placed a piece of plastic on the back of the regulator board so there is no chance of grounding out to the metal can


Pix 12
shows where I cut the trace between the two meter inputs so they can be fed by different sources.


I have not yet been able to calibrate the gauge as I do not know how much fuel is in the tank. I will wait until I run out of gas to calibrate the gauge exactly to the E. Then I will see how far the gauge
travels to the F.
I am mostly interested in when the gas is getting to Empty. I will just make a mental note where the Full is.