I don't ever really trust my stock gauges. Either they get stuck on my overlays, or just aren't correct. I didn't put these in. It did take 2 days though. OK, he got to my car as he was locking up the 1st day. He did say he probably ran 50 feet of wire. That's about all I can remember, sorry. That's for the sending unit, right? I have no idea, so am looking from summit where I bought it. I used the AM 5727 oil pressure one. It says it is mechanical.
It was cloudy as hell where I live. My car's top leaks, so I was trying to get it under my carport. Wasn't really looking @ the gauges. I think it wil be OK for me to view.
Also. I have removed the needles about 3 to 5 times. That is what ruined my stock clusters. Afraid this one might go bad as well. Hope I helped with your ?.