71 Pontiac T-37 Electrical Question

[hotrodsouth]

I need some help...I bought a 71 T-37 and the dash lights don't work. looking at the wiring under the dash, I see there's a gray wire with a plug in connector not connected to anything, another gray wire on connector hanging loose, and another plug with 2 wires not connected.

I found a wiring diagram and see that there is a gray wire with what I believe to be a plug symbol that is labled "Rheostat Conn." What is that for and would that wire need to be connected to the headlight switch? I haven't traced the other loose gray wire yet. Any thoughts would be greatly appreciated. Thanks, Brian

 

[Zimgxp]

It controls the brightness of the dash lights. Plug it in.

 

[hotrodsouth]

Thanks...That is what I assumed but didn't want to just start plugging things in without some knowledge of what it was for. Brian