PPE 513010000 Fuel Rail Pressure Gauge

so i unpacked the gauge and everything looks fine, i go to install it and there are five or six wires coming out of the back of the gauge two of them go to the ppe wiring harness and they are marked on the harness if you bought it extra, the rest of them i dont have the slightest clue where they go. i called ppe they tell me to watch the youtube movie of the install and that it explains everything. so i watch the movie and it just shows some guy installing gauges. what it doesnt show is what wires go where they guy is just taking some wires and crimping them with other ones. how is it so hard to just put a little piece of paper in with the gauges that says red to positive purple to somewhere green to i dont know gray to i still haven't figured it out

I live in Canada where it gets to about -20C. last winter my PPE gauge started fogging up every morning. When I called PPE about it the said there is nothing they can do IT ISN'T WATER PROOF. I have an Autometer gauge that is flawless and a Snow gauge that is flawless. To me this proves they are making substandard parts for our rigs. NEVER BUY this gauge. PPE said they can't do anything about it and that is just a slap in the face. They wouldn't even replace the one I have after I sent them a Video. POOR PRODUCT! 1 STAR because it reads pressure.