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) |
TeenerTech |
Jul 16 2016, 10:55 AM
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#2
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some mechanic Group: Members Posts: 17 Joined: 21-July 14 From: Grand Rapids, MI Member No.: 17,667 Region Association: North East States |
where are you mounting the gauges?
if your mounting them in a center console there is already wires for power, ground, switched power, oil temp, and the blk/blu wire for gauge illumination. for the oil pressure sender, the sender will not fit in the existing hole you have to remove the oil pressure switch next to the dizzy and use hose to mount the sender on the fan housing or wherever you decide. |
914 RZ-1 |
Aug 6 2016, 05:52 PM
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#3
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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 |
where are you mounting the gauges? if your mounting them in a center console there is already wires for power, ground, switched power, oil temp, and the blk/blu wire for gauge illumination. for the oil pressure sender, the sender will not fit in the existing hole you have to remove the oil pressure switch next to the dizzy and use hose to mount the sender on the fan housing or wherever you decide. I just figured out that "dizzy" is distributor! Duh. Where did you get the fittings for the hose? The fittings on the sensor are tapered and metric. My FLAPS didn't have anything that fit properly (they had some pipe threaded ones that were close, but...) Where are the wires on the sender, by the way? I can't see them in the picture. |
TeenerTech |
Aug 6 2016, 06:34 PM
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#4
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some mechanic Group: Members Posts: 17 Joined: 21-July 14 From: Grand Rapids, MI Member No.: 17,667 Region Association: North East States |
You can get the hose from Auto Atlanta and the wiring ( on the sender WK goes to factory light, G goes to your gauge) if you use a rubber extension you will need to ground the sensor if you use the steel braided hose it will ground through the hose to the engine.
As for the wiring fuse 9 is your switched power, the illumination wires go from the light switch to the gauges (no fuse) it is a black wire with a blue stripe you can ether tap on at the switch or at the gauge. |
914 RZ-1 |
Aug 9 2016, 11:23 AM
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#5
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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 |
You can get the hose from Auto Atlanta and the wiring ( on the sender WK goes to factory light, G goes to your gauge) if you use a rubber extension you will need to ground the sensor if you use the steel braided hose it will ground through the hose to the engine. As for the wiring fuse 9 is your switched power, the illumination wires go from the light switch to the gauges (no fuse) it is a black wire with a blue stripe you can ether tap on at the switch or at the gauge. Is there any other source for the adapter fittings? The hose I can get at my FLAPS, but the fittings are metric and tapered (like pipe thread). I've called around and can't find a source. Has anyone used regular (non-tapered) metric fittings? The FLAPS (and some other sources-the Samba, etc.) all say using the closest English size will work, since the threads are so close, but I'm hesitant. Won't using a non-tapered male thread in a tapered female hole screw something up? Will it be tight enough? |
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