Another oil pressure/gauge question

Joined
Jul 3, 2004
Messages
4,414
Location
Anchorage, AK
So, looking at the wiring diagram for early 70 series, it makes a distinction between a oil pressure switch and oil pressure sender. Are there two different senders/sensors on the block? I am trying to find some missing wires from my HJ75 harness that I have messed with doing a rhd to lhd swap. Also installed a 12HT. Thanks

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David*BJ70

Looking forward to reach the end of the world
Joined
Jan 13, 2004
Messages
1,911
Location
Montréal, Canada
Your picture show the oil pressure sender who talk to the dash gauge. There is actually a another pressure switch who should cut the EDIC if there a lack of oil pressure.

However, I am uncertain whether the 12HT has an oil pressur switch since it does not have an EDIC while this is the case with 2H
 
Joined
Aug 22, 2010
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2,685
Location
Jersey, 07740
I found the original wire in the loom.👍 Have a question about this wire. Why is it a shielded wire?

the shielding is typically used to reduce noise from other components, i would guess so the edic isnt getting any false signals and shutting down the engine. that and its not easy to do a repair on shielded wire so you would have to buy the harness
 

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