 oil pressure switch, wiring help needed! |
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| mobymutt |
 Jul 11 2021, 08:11 PM
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Senior Member  Group: Members Posts: 553 Joined: 16-December 13 From: Kingston, Ontario, Canada Member No.: 16,770 Region Association: Canada  |
I just swapped out my 1.8L for a 1.7L (so I could rebuild the 1.8L), and I can't find the wire that goes to the pressure switch.
I've got carbs, so the wire harnesses have a zillion unused wires. But I thought there would be a wire with a dangling connector somewhere nearby... apparently not. The car is a '74. From the wiring diagram, it looks like the wire should be green with red stripes, but I can't find that either. Can anybody tell me how I might go about finding the correct wire to hook up? Maybe the physical location of the wire run to start? Or where it comes from, or what other wires it would be with? Any help is appreciated, thank you! |
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| mobymutt |
Jul 13 2021, 10:16 AM
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Senior Member Group: Members Posts: 553 Joined: 16-December 13 From: Kingston, Ontario, Canada Member No.: 16,770 Region Association: Canada |
914world to the rescue again! Thank you everyone!
Found the relevant wire wrapped under layers of extremely old black tape. This tells me a couple of things: -the PO's mechanic didn't concern himself with irrelevancies like oil pressure -the current owner was too daft to notice that it had never been hooked up before. So I now have new pretty green light on my dash when I turn the power on! With the engine running, should that green light turn off, or stay on? |
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| iankarr |
Jul 13 2021, 11:18 AM
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#3
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,566 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region 
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QUOTE(mobymutt @ Jul 13 2021, 12:16 PM)  914world to the rescue again! Thank you everyone! Found the relevant wire wrapped under layers of extremely old black tape. This tells me a couple of things: -the PO's mechanic didn't concern himself with irrelevancies like oil pressure -the current owner was too daft to notice that it had never been hooked up before. So I now have new pretty green light on my dash when I turn the power on! With the engine running, should that green light turn off, or stay on? Great that you're on the road to restoring things back to stock. it's entirely possible that the PO had an aftermarket oil pressure gauge installed and didn't use the stock wiring. A lot can happen in 50 years (IMG:style_emoticons/default/wink.gif). The green light should be on until the engine starts running, then turn off...assuming you have good oil pressure. If the light stays on, and your engine hasn't seized, the sender is probably bad. |
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Posts in this topic
mobymutt oil pressure switch Jul 11 2021, 08:11 PM
76-914 IIRC, that wire is attached to the rear of the eng... Jul 11 2021, 11:15 PM iankarr I'm away from the garage, but pretty sure oil ... Jul 12 2021, 12:30 PM
76-914
I'm away from the garage, but pretty sure oil... Jul 13 2021, 11:09 AM Dave_Darling I believe that Ian has the right answer here.
--D... Jul 12 2021, 10:51 PM GregAmy Gents, my notes indicate the OP switch wire is gre... Jul 13 2021, 05:48 AM IronHillRestorations
With the engine running, should that green light ... Jul 13 2021, 10:20 AM 930cabman
914world to the rescue again! Thank you ever... Jul 13 2021, 10:49 AM |
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