I have the stock oil pressure gauge in the instrument cluster. I have the sending unit already in the threaded port of the 13B housing. It has a single wire dangling.

Which harnass wire ( 1981 12A originally ) do I attach to the sender wire to make my stock gauge work in my instrument cluster ?

Put another way, which of the wires from the original harnass ( 1980 12A ) connects to the sender to make it work ? I have a few unused wires (some with voltage on them, others without ), but don't want to play "process of elimination.

I would truly appreciate it if someone would look and identify it for me... like "the second wire branch after the whatever", etc. ( you know, like you would tell your 5 year old

 

all the sender unit for the oil pressure are the same from 81-92, the wire color is yellow
with orange i believe. the connector at the end of iit will only fit the switch. rx7doctor

 

I didn't think the 1980 rotor motors, nor harness, had an oil pressure send...

 

its from the passenger side harness and it slips over the funny fitting on the oil pressure sender. its the only one that will connect to it.

 

Oops ! Got fat finger disease... I meant 1981 harnass that USED to go to a 12A. The engine is now a 13B, so I see the sender, but which wire is ( was ) the question.

Thanks.

 

should be the orange/brownish with yellow stripe, rx7doctor

 

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j/k..just messing around with the surgeon general.

 

I was starting to wonder what rock or cave you crawled back into, LOL... rx7doctor