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03-11-2004, 02:02 AM
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#1 |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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voltmeter reading???
where does the voltmeter get its reading from?
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03-11-2004, 02:08 AM
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#2 |
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Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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Any ignition switched source.
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03-11-2004, 02:09 AM
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#3 |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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so.....
where does the stock gauge get its reading from? |
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03-11-2004, 02:27 AM
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#4 | |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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Quote:
Aka, anything that turns on when you turn the key to the on position.
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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03-11-2004, 03:16 AM
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#5 |
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Registered User
Join Date: Oct 2002
Location: where it's hot
Posts: 1,059
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The stock gauge gets its signal to read from the alternator
Last edited by Bowed; 03-11-2004 at 03:29 AM. |
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03-11-2004, 08:53 AM
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#6 | |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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Quote:
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03-11-2004, 12:11 PM
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#7 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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haha, for a third time here :p
 Just put it onto anything that has power when you turn the ignition key on  It doesn't use very much power. We knew that you are running a single wire alternator, so thats why we are telling you this, lol 
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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03-11-2004, 02:15 PM
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#8 |
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Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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The stock gauge get it's power from the same power source as the other gauges.. In other words, from the back of the instrament cluster, which gets it from the ignition power source. You can use the same source that powers the other gauges, or run a wire down to the fuse box and plug it into a ignition controlled power tap.
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03-11-2004, 02:39 PM
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#9 |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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so with me going with a 1 wire alternator, i shouldnt need to rewire anything?
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03-11-2004, 02:51 PM
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#10 |
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Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,904
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NeCrOmAnCeR, i dont think he was asking how it is powered, it was more where it gets its reading from. like a tack, its powered from a switched source, but gets its reading from the distributor.
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03-11-2004, 03:00 PM
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#11 |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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the msd 6al box needs a 12v switched source. i hooked it up to the original pink wire that was ran to the dizzy.
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03-11-2004, 03:05 PM
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#12 |
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BeWarE tHe eViL CrAnkTOe!
Join Date: Oct 2002
Location: Yukon, OK
Posts: 3,605
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Make sure you always double check your wiring on switched and not switched, using a test light. I have seen many people mess up stuff like this or kill thier battery.
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~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - 1986 Chevy Custom SWB *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods  www.cardomain.com/id/ramairdave AIM Screenname - Jester84 |
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03-11-2004, 04:45 PM
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#13 |
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Registered User
Join Date: Jan 2002
Location: Houston, TX
Posts: 2,144
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you shouldn't have to rewire your guage just because you went to a 1 wire. i went to a 1 wire and didnt' touch anything to do with the guage and it works fine
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'51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works '05 1500 Crew Cab RIP '84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker '80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's |
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03-11-2004, 04:52 PM
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#14 | |
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Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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Quote:
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03-11-2004, 05:29 PM
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#15 |
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Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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For any voltmeter I have seen, the power source and where the gauge senses the voltage are one and the same. Voltmeters only need a power wire and a ground to work.
Yes, you don't need to rewire because of a different alternator, I thought you were installing aftermarket gauges. Sorry for the confusion. |
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03-12-2004, 02:59 AM
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#16 |
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Registered User
Join Date: Oct 2002
Location: where it's hot
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I'm just a little confused on one thing and maybe someone can explain it to me . I agree the voltmeter will just simply read the switched source but I also thought ( on these trucks at least ) a wire ( path ) from the voltage gauge ran back to the alternator and thats the point where the factory set up measured the voltage potential ? I always thought it was the brown wire #25 on the 2 wire connector ?
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03-12-2004, 08:03 AM
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#17 |
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You get what you pay for
 
Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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The brown wire goes to the ignition switch. This is what energizes the alternator. The voltmeter can receive it's power from any switched 12 volt source.
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Mike 1985 Chevy C-10 |
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03-12-2004, 02:32 PM
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#18 |
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Registered User
Join Date: Oct 2002
Location: where it's hot
Posts: 1,059
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Mike , thanks for straighting me out on that . My mind must have been stuck on the old days when they " some times " used a gauge with an ampmeter movement to measure between the alternator and the starter selenoid main power terminal.
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