installing gauges, need help/advice wiring oil temp and pressure gauges |
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installing gauges, need help/advice wiring oil temp and pressure gauges |
914 RZ-1 |
Jul 15 2016, 02:56 PM
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#1
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Porsche Padawan Group: Members Posts: 683 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
I got oil pressure and oil temp gauges. The instructions are generic and I'd like some specifics about how to install them on my 1.7L '72. Sorry if these seem obvious; I've never done this before.
1. Standard ground or floating ground? I'm leaning toward floating because it looks obvious how to attach the ground. On the standard ground, how do I attach the gnd wires? 2. What do I attach the wire from the gauge light socket to the light switch to? The headlight switch? Which connector? 3. Which fuse do I use for power? #9? 4. I figure I will just attach grounds to a screw on the body, either an existing one or a new one. 5. What is the "switched +12v" light shown in the instructions? The dummy light? 6. Does the oil pressure sensor get installed where the current oil pressure switch is by the distributor? Doesn't appear to be any room, but I'll need to move some hoses, etc out of the way. 7. Where does the oil temp sensor go? The instructions state that it can replace the drain plug. Is this correct? 8. Where is the best route for the wires? I was thinking thru the middle along where the other wiring harness is located. What should I do with them in the engine compartment: zip tie them to other wires, or let them hang free, or what? If anyone has done this and has pictures or a more detailed description, I'd appreciate it. Attached thumbnail(s) |
Retroracer |
May 19 2022, 02:04 PM
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#2
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Senior Member Group: Members Posts: 612 Joined: 7-July 13 From: Bend OR Member No.: 16,100 Region Association: Pacific Northwest |
On the oil pressure gauge pinning issue, suggest the following:
1) disconnect the sender at the GAUGE end. Does the gauge still go to full scale? - if YES, then somethings wrong with the gauge or your connections to it; make sure the gauge case is connected to chassis - if NO, then go ahead and connect the sender wire again next: 2) Gauge should still be indicating full scale (incorrectly). Disconnect the sender at the SENDER end. Does the gauge still go to full scale? - If YES, then you have a wiring issue, possibly sender wire is short to chassis - if NO, then you have a dodgy sender OR wrong sensor / gauge combo You might want to double check the connections at the sender end; swapping the switch and sender connections won't harm things but will exhibit funky behavior.. Hope this helps / makes sense - Tony |
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