hitbyastick

<a href="http://ptlcs.homestead.com/Diagram.html" target="_blank">http://ptlcs.homestead.com/Diagram.html</a>

Does this look right. It's the hook up Diagram for my oil pressure gauge. The sender is grounded seperately, because it's too big and doesn't fit past the sheet metal. So I use a little bit of nylon tubings and fittings and whatnot to make room. Then I grounded the sender, powered the gauge and ran a wire from the sender to the gauge. But the gauge doesn't work. The idiot light seems to. What gives? <img src="graemlins/cussing.gif" border="0" alt="[grrrrrrr]" />

Joe R

I have never seen a sending unit that need a ground. The body of the unit is grounded to the case of the motor. If memory serves you were looking fo a dual sending unit. One pole for the gauge and one pole for the idiot light. No ground required at the sender

hitbyastick

there is a G and a WK imprinted on each sender. Which ones for which. I hooked up a different gauge still nothing. I'm confused.

Joe R

Don't know, normally if you have power at the gauge and one wire to the sending unit you should have an indication. If you ground the wire that connects to the sending unit you should get the idiot light or either full needle deflection or none. depends on how the sender is constructed. Keep us posted when you fix it so I can store this in my memory bank.

philinjax

"G" on the back of the gauge goes to the sender, the "+" goes to 12 Volts and the other terminal goes to ground.
Phil

Evill Ed

On the dual sender - WK is for the oil light and G is for the guage. To check the guage for correct operation, take the lead for the G terminal and ground it, the guage should read max oil pressure or go from max oil pressure to 0, (I forget which way). If the guage works, the sender could be bad. I have had 2 dual sending units go bad in the past.

Ed