factory gauges vs warning lights

[Redneckchevy]

Cant find nothing in my chilton book :/

[VileZambonie]

It's a temperature sending unit with a wire. There are 2 types NTC and PTC. Negative or Positive temperature coefficient thermistor. An NTC lowers it's resistance as temperature increases and a PTC increases it's resistance as the temperature goes up. So depending on the gauges you are using would determine which type of thermistor you use. If you just wanted a warning lamp you could simply wire in a temp switch.

[Redneckchevy]

So if i wanted to reinstall the stock one i would have to find it then unhook the Old one and replace it and reconnect it to main harrnes??

[VileZambonie]

Just replace the sending unit and run a wire to whatever you hooked up to your gauge. Did u get a new harness?

[Redneckchevy]

Yea i sat there and soldered every singel wire back on...And shrink wrapped every open...Took me 2 hours...The guy Cut it off pretty far back...It will have to do till i find a new replacement harness...Then there is a wire...Coming off  the  Heat selector light bulb...going God knows ware...ill take a pic of that tomorrow..cause i also cant find the in a book...I got a bad feeling this truck is gonna burn.....He hacked it so bad i found that he ran power from a ground?? and Got ground from a ign source...Its crazy!