 Power to my new gauge |
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| jsayre914 |
 Aug 29 2012, 02:35 PM
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#1
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Speed Up !!!  Group: Members Posts: 3,188 Joined: 10-February 08 From: Timonium MD 21093 Member No.: 8,696 Region Association: MidAtlantic Region  |
I have the center console, i removed the clock. I put a oil pressure gauge in the hole, ran the wire to the dual sender. I want to jump the power and ground from one of the other 2 gauges. I figure between oil temp or volt ; go with the volt gauge. It is already switched, but then i was thinking how this voltmeter is affected by the brake lights, turn signals etc.
Is this a bad idea? Why run more wires to the fuse box if you dont have to?? (IMG:style_emoticons/default/popcorn[1].gif) |
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| McMark |
Aug 29 2012, 05:40 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
The clock had a + and a - wire for it, right? (IMG:style_emoticons/default/idea.gif)
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| ConeDodger |
Aug 29 2012, 05:54 PM
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#3
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Apex killer! Group: Members Posts: 23,586 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California 
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Joe! You have to spring for the new wifi gauges! (IMG:style_emoticons/default/biggrin.gif)
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| Valy |
Aug 29 2012, 06:51 PM
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#4
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Senior Member Group: Members Posts: 1,675 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Don't use the power from the clock. That's always on and will drain your battery without any need.
The power from the voltmeter or oil temp is exactly the same wire and is good to use. Don't worry about fluctuations caused by other loads - everything in your car is designed to overcome those fluctuations. On a separate note, big voltage jumps when something is turned on point to a bad ground on the circuit you just turned on. |
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| Cap'n Krusty |
Aug 30 2012, 09:32 AM
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#5
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
The volt meter is what's called in the trade "eye candy". It's readings are essentially inaccurate and irrelevant. If you want it to give you a true picture of the voltage at the battery instead of the fuse box, you need to use the power wire from the fuse box to activate a relay into which you run a lead from the positive battery post. If you don't know how to wire a simple load reduction relay, just ask.
The Cap'n |
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