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) |
Dave_Darling |
Sep 16 2016, 09:57 PM
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#2
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914 Idiot Group: Members Posts: 15,048 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Looks like the black part should pull out the back of the gauge housing; the bulb will be held in that.
Check to make sure that you have +12V on your lighting circuit when the headlights are on. Do the other instruments light up? The instrument light wires are mostly black with a blue stripe, except in 74+ cars (maybe also the earlier ones, not sure!) a gray wire connects in basically at the center console location. Where is the oil pressure gauge signal wire hooked to? If you hooked it up to the stock sender, you'll get either full-deflection right or full-deflection left, I forget which. The stock sender is just an on/off switch for the light; you need the correct sender for the gauge. --DD |
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