Directions indicate what wire is what... why not hook them up like isspro says?
Ya makes no sense to me either.I just installed an new fuel pressure gauge...It does say to hook up all of the wires. There is no breakdown of only install x wire for x functions. It says hook up power, ground, and your data input wires. Why would you think to not hook up all of the wires like the directions say?
This is correct, I’ve installed 3 of these gauges on different trucks and the package has always had all wiring included.That gauge should have come with a black, orange, and red wire. I have wire out the yazzoo with from my gauges. Look in your packaging again. It should be coiled up and wrapped with painters tape in the box with the gauge.