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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Apr 2009 Posts: 554 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 554 | I went ahead and removed the gauge and tested the ampmeter using another vehicle that had a battery using a headlight bulb as Jerry suggested. I had been using a old motorcycle battery to check it on the truck and it didn't have enough juice left to light a headlight bulb. I am glad I checked- the Classic Parts instructions were correct. They said connect the battery input to the negative ampmeter post and the battery lead from the regulator to the positive side. Since the posts are not marked one must assume the one behind the the C is positive and D is negative.
Since this seems contrary to the advice given by people on the forum that know what they are talking about the indicator needle must be moving in the opposite direction of the current. When I did my headlight test with the light connected to the post on the discharge side of the amp gauge and the battery to the positive side the amp gauge showed charge. Reversing the load showed charge.
Chuck | | |
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