Aftermarket VDO fuel gauge help needed Options

[tornik550]

I am trying to use a aftermarket VDO fuel gauge. I am not very clear of how to wire it. Obviously positive goes to switched positive, neg to ground however I wasn’t sure where to connect the sender post on the back of the gauge? I tried hooking it up to the “G” post of the gas tank sender- gauge then reads 0 (even though tank is full). I tried hooking it up to the “WK” post on the gas tank sender and the level goes up to 3/4- even though tank is full. I have used an old gas sender and a brand new one and the same thing happens with both.

[Dave_Darling]

The 914 gauge reads resistance. I believe it reads low resistance when the tank is full, and high resistance when it is empty. Check the signal from the sender to make sure.

The "G" should be the signal for the gauge, the "WK" is the ground/disconnected that turns on the warning light. The three parallel lines are the ground connection. You do need that hooked up to ground, of course.

--DD