Maybe someone can help as the directions are of no assistance. I am trying to wire some gauges on my run stand....I am having problems with the oil pressure and water temp gauges. Both gauges have 3 wires exiting the back (Red/Yellow/Black) and appear to have no lights. The oil pressure sending unit has 2 terminals one marked G and one marked WK. The water temp. sending unit has only 1 terminal. I have currently feed both gauges 12v+ on the red wires is this correct and where do the other wires go?......:confused:

Reds are 12 volt+. Blacks are grounds (goes to bare metal) Yellows goes to senders. On the oil pressure sending unit, the "G" is for a ground wire, the "WK" must be to gauge (yellow wire)

Thanks Greg I'll give that a try....I found a pamphlet I received with a set of gauges I installed in my boat. It was very informative and supports your instructions....Thanks again Greg.