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) |
914 RZ-1 |
Sep 15 2016, 11:12 PM
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#2
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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 |
So I got the gauges installed. I think the oil temp one works; I haven't got the car hot enough to register. The gauge starts at 120F and I only drove around the block, let the car cool, then fixed a connection. When I started the car a little while later (about 15 minutes) the gauge twitched a bit.
The oil pressure gauge maxes out immediately. I'm thinking this is an electrical grounding issue? I've got it grounded to the fan housing in the engine compartment. Also, the gauge lights don't come on when I turn on the headlights. I tapped into 2 (one wire per gauge) of the black and purple wires that are for the gauge lights. Went from there to the gauge light. From the gauge light to ground on metal by knee board. How do I remove the lights from the sockets? I pulled and they don't come out. They don't seem to twist either. I have VDO gauges. I tapped into the same fuse (#9) as the radio for power to the gauges. Used a piggy back connector and put 2 wires on one spade, then into the fuse connection. I'll try and post pictures later. I'll also post what I found to use for a hose for the oil pressure sender. |
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