redrocketz
Member
ummmm how many of you have ever worked on cars professionally?
I have and still do
I would say there is an issue with the sending unit not being hooked up right. a really easy way to know it is hooked up right is to take the positive wire and run it to the battery and the negative to any random grounding bolt on the car. then run the signal wire to the gauge and your done if it still doesn't work then the unit is messed up for sure. I installed one before that would go to 5 psi and then dropped to zero, so I rewired it and it was fine so check your connections.