Hey guys, i'm alittle confused on which color wire goes to what and how the wire connects to the oil press sending unit. I believe that the black wires are the ground, red wires are the power source?, and the green wire is for the sending unit? It would have been helpful if the guages came with instructions. The oil sending unit did not come with the gauges, i had to buy it separately since the original one did not. The power inverter box is from my old car that i used on my indiglo gauges. Here is a pic of the items I have. Could someone point me in the right direction. Am i missing wires because I bought these used off someone on the org. Thanks in advance.

 

What brand are they? if they are autometer, you can get installation instruction off their website.

 

they are autocentric(sp?) i believe.

 

I never heard of them. Better do some research and contact the manufacture for the installation instruction.