Amp gauge bypass - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
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#1 Old 12-03-2013, 02:12 PM
76d100318
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Amp gauge bypass

On my 76', i replaced the alternator with a rebuilt 65 amp, voltage regulator is new, and battery is new. when the truck is running and electric fan is on when i check voltage at the battery its at 12.6 or so. when the fans off its at 13.2 or so. fan only pulls 13 amps. But im thinking about doing the ammeter bypass. Buying the kit from madelectric. Can one of you break it down to baby steps for me? lol sounds dumb but ive read their site multiple times and got lost at some points. thanks everyone.

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#2 Old 12-03-2013, 06:39 PM
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I know how you feel, I want to do the same thing to my 76 W100. I got lucky, my amp gauge crashed about a month ago. Started smoking and took out some of my other gauges and my radio. I got a replacement gauge, but now I need to do the bypass.
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#3 Old 12-03-2013, 08:43 PM
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Oh dang man. It's just the wiring isn't up the task of having all the power going through it. I get how to do the wiring but when mad electrical says to put a large size wire from the alt to the starter relay what happens to the voltage regulator? Do you unhook the old wiring and take it out so the new wire is the only one sending power to the battery or what?

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#4 Old 12-03-2013, 09:23 PM
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just add a wire from the output on the alternator to the battery with a fusible link inline and you should be good. leave the old wiring there. the way the old wiring is is good because power does not have to travel as far to get to everything but all the power goes through the amp gauge on its way to charge the battery which is bad.


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#5 Old 12-03-2013, 10:59 PM
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Ah now I see. What's better to do for the terminals on the ammeter, to solder them together and crimp them or bolt them together or put one wire on the other terminal?

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#6 Old 12-03-2013, 11:31 PM
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i would not worry about bypaasing the amp gauge inside the truck. running a wire from the alternator output to the battery should do the same and is a lot easier to do.


81 dodge d150 custom long box 318 670CFM Holley Street Avenger Carb
93 ramcharger 318 FI 2wd

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#7 Old 12-04-2013, 12:34 AM
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Dumb question but how do I wire in fusible link? Probably going to use 8 gauge wire with 12 gauge fusible link.

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#8 Old 12-04-2013, 01:58 AM
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IT just goes in series with your wire your running. should be ok to solder and shrink wrap
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#9 Old 12-04-2013, 08:38 PM
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I did what crazzy posted.

Disabled my amp gauge but everything works.


To 76d100, got any pictures you're willing to post of your truck? Looks nice.

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#10 Old 12-04-2013, 11:16 PM
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Ah interesting. I'll think about keeping the gauge. Hey thanks man. Yeah sure I'll try my best.
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1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#11 Old 12-04-2013, 11:18 PM
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Pretty much on the restored road
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1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#12 Old 12-04-2013, 11:24 PM
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Quote:
Originally Posted by 76d100318 View Post
Ah interesting. I'll think about keeping the gauge. Hey thanks man. Yeah sure I'll try my best.
well if you would like to keep the gauge then you want to upgrade the wire that run between the alternator output and the amp gauge and then upgrade the other wire that runs between the amp gauge and the battery. the bulkhead connector is one of the weak spots on older vehicles.
http://www.allpar.com/history/mopar/electrical.html


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#13 Old 12-04-2013, 11:30 PM
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So there's the wire on the amp gauge where does that go to? The wire from the alternator, where does that go to? And do they plug into the bulkhead or what?

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#14 Old 12-05-2013, 03:15 AM
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The alternator wiring snakes from the alt., through the voltage regulator then through either the battery or the amp gauge, I dunno which. Crazzy should be able to elaborate on that. All I know is that stock, it has WAY too much current driving through it. lol

And AWESOME looking truck 76! Mine won't look near as good as yours! Keep up the good work.

1998 Ram 1500 4x4, QCSB, 360, ebay plenum, catch can, new cat, Thrush Turbo, full factory build sheet, other random stuff -- 1976 Dodge D200, CCLB, 400, 850 cfm (440ci) 4BBL carb, 727, D60, 4.10, open diff, 2.25in true duals, Dynomax Super Turbos, mostly black and an aggressive driver
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#15 Old 12-05-2013, 09:03 AM
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Here is the engine schematic. Hopefully you can read how it all goes.
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#16 Old 12-05-2013, 09:23 AM
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well if you read the article i linked to you would see that the wires that run though the bulk head connector have a tendency to corrode and overheat over time which is what causes issues. the amp gauges them self do not usually fail.


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#17 Old 12-05-2013, 11:47 AM
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Yeah I've read that link like 4 times. I'll take a look at the wiring diagram. Thanks everyone. Should I just run a wire through the bulkhead instead of putting connectors on it right?

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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#18 Old 12-05-2013, 01:19 PM
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Yes. You can drill a hole and install rubber grommets. You can find those at the parts store

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#19 Old 12-05-2013, 03:04 PM
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i have no issue just bypassing the amp gauge but i guess if i would going to keep the amp gauge i would bypass the bulkhead connector and just run wires through a grommet just like the heavy duty vehicle would have had from the factory.


81 dodge d150 custom long box 318 670CFM Holley Street Avenger Carb
93 ramcharger 318 FI 2wd

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#20 Old 12-06-2013, 01:15 AM
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Might just drill through the firewall instead of the bulkhead and add a grommet. Thanks Guys

1976 Dodge D100 regular cab short bed, 318 2 barrel New carter BBD, np435 four speed 91/4 3.21 gears. Headers, dual 2.5 exhaust, into 2 Flowmasters super 44's. Custom

1972 Dodge Dart swinger special. 366 small block chrysler (360), 727 torqueflight, 8 3/4 4.10's spool. 450 horse. Street/strip car
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