RE: 1970 Chevy c/10 from dummy ligh
Is the battery gauge you are installing a volt meter or an ammeter. Those are hooked up differently. A water temperature gauge kit (If electric) has a new sending unit and the gauge. If your pickup has a small block V8 then the the sending unit is on the passenger side of the vehicle under the exhaust manifold. It needs to be removed (need a big socket, probably 15/16). The new sending unit will have several adaptors to screw in the fit the vehicle. Find the right adaptor and install the new sending unit into it, then tightly screw it into the engine block. The hardware should be brass, so it can be tightened pretty snug. Make sure you don't use any threadseal or teflon tape because the sending unit has to ground to the motor. There will be a spade on the sending unit that has to be run to the back of the gauge, then there will be another spot on the back of the gauge for a light, if equipped. If it has a light then there will also be a ground wire on the gauge. If the gauge is mechanical, then there will be a solid hose that has gas in it that expands from heat and the pressure will move the needle. Then, lighting wires behind the gauge. Either way, be sure to drain the radiator to a level below the original sending unit before removing to avoid a mess. Also, there are "T" fittings available to have 2 sending units installed, if you want to have a gauge and keep the idiot light too.
Good Luck and God Bless,
Brian
