Spdracr wrote:welcome to the site, im glad you joined cuz i do have a question about the gauges
i bought 2 gauges (boost and oil pressure) for my volvo 740T, wired everything but didnt install the sending unit until a while later since the location was hard to get to and the wire was hard to run unless the car is cold
wired everything properly for the oil pressure gauge and im not getting any reading, the needle is on the max (100psi) i think and the colors aren't working properly cuz when the lights are off the gauges should light up white and with the lights on it should be green but it stays white
the colors used to work properly before i wired up the sending unit, i havent dug up my wires to see if something came loose but what do you think the problem can be ??
ok, with the gauge pegged out that indicates an open circuit. IS the sender grounded seperately? you should have a ground wire from the sender (performance series).?
Lighting: the orange wire needs to have a 12v power source (to make the gauges turn green when the lights are on) so most likely you are tied into a dimmable circuit and thus not getting 12v. so easy fix is to turn up the dimmer and see if that works. if so, you may want to consider moving that to a true headlight switched power source.
