Oil Pressure Switch? Extra wires

[demian5]

So I have the engine and trans out and want to clean up the engine compartment. I have some extra wires i would like to clean up.
The truck had two temp senders, one in each head (both green wires), I don't know why. Both were hooked up.
There is a larger wire with a rubber spade plug type connector.
There is a 2-prong connector with 3 wires going to it.

And should my truck have a generator and oil pressure idiot light along with the gauges? If yes, where would the oil pressure switch be installed? I have the gauges.

I did some searching but didn't find anything, and none of the wiring diagrams had anything.

Could this be an AC harness?

Thanks.

[rpmerf]

Trucks with gauges have an oil line going to the gauge. It taps in around the distributor. I think you have lights for brake and generator.

Not sure on the AC harness, I can see what I have on my truck.

[68 P.O.S.]

The temp switch in the passenger side head is likely for the TCS system (transmission controlled spark). If so, you don't need it.

[saxart]

Originally Posted by 68 P.O.S.

The temp switch in the passenger side head is likely for the TCS system (transmission controlled spark). If so, you don't need it.

My '70 had this crap system on it. Looked like a horn relay mounted to the firewall, and some extra wires. Ripped it out when the engine was out.

[HO455]

A PO has done some wiring which may be good or bad. These trucks only came with one temperature sensor. A temperature switch for an idiot light or a temperature sender (resistance style). If the PO just spliced a 2nd wire into the original it will have to be removed as the gauge will never work that way.
The PO may have added a switch and wiring to the idiot light to supplement the guages. This could have been done with the oil pressure to. If so the easiest place to attach a oil pressure switch would be to tee into the block where the factory guage line hooks up near the distributor or possibly at the back of the gauge.

[demian5]

Originally Posted by 68 P.O.S.

The temp switch in the passenger side head is likely for the TCS system (transmission controlled spark). If so, you don't need it.

Another question, will my temp switch in my head get a good ground with the aluminum heads? I have good grounds between the heads and cab, cab and frame, battery and block, batter and clip, frame and bed, block and frame.

[LockDoc]

Originally Posted by demian5

Another question, will my temp switch in my head get a good ground with the aluminum heads? I have good grounds between the heads and cab, cab and frame, battery and block, batter and clip, frame and bed, block and frame.

Yes it will.

LockDoc