Amp gauge wiring need help? - Team Camaro Tech
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post #1 of 2 (permalink) Old Apr 1st, 10, 10:53 PM Thread Starter
Join Date: Sep 2009
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Amp gauge wiring need help?

Ok, guy's I got a repo amp gauge from a repo factory console cluster setup I wired up on a 69 camaro. The wire I used was 14ga 600v (I'm thinking if my memory is right it came from the plant when the I-T tech's rewired the computer's in the plant, so its a/c wire) Anyhow check out the diagram attached and see if I've got this gauge wired up right. Now when the gauge is on, if you look at the amp gauge needle from the center line it only moves between 1 or 2 notches from the center line to the positive side? Is this correct (to only move between maybe 1 or 2 notches)? I just want to be sure it's reading right and I have it wired ok. Check it out and let me know if I need to change something or it's ok like it is. Thanks in advance guy's
sorry for the rough diagram I was in a hurry to get to sleep ...LOL
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post #2 of 2 (permalink) Old Apr 2nd, 10, 03:39 AM
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Re: amp gauge wiring need help?

The OE console ammeter is actually a millivoltmeter and its measures voltage drop of the wire from the meter to its attachment points. Hopefully, the repo gauge is the same design. If you have a real ammeter, then you should change the connections at the battery and size of wire.

You have the right points of connection for OE design ammeter.

If OE design - first item to check before starting the engine, is check to see there is an OE 10 AWG red wire between the junction block and buss bar. If there is one, good to go. If not, and I wouldn't suspect it's missing, install the #10 AWG wire, any color and multistrand and connect it to these two points.

After the above task is completed, turn ign on, needle should deflect to the left of center. If needle deflects to the right, swap meter leads behind the meter.

If a shunt ammeter, replace present 14 AWG wire with #8 AWG and connect one meter lead to the buss bar and connect the other meter lead soley to battery pigtail; leave alt lead on junction block with radiator support red wire going to buss bar. You are connecting the ammeter to monitor battery current.

After the above task is complete, key on, needle deflects to the left; if not, swap meter leads.

In all cases of running wires through the firewall, use grommets to protect wire from chaffing.

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