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Old 10-28-2010, 01:01 PM   #6
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fwiw, both my 2002 Chevy 1500HD and 2008 GMC 2500HD seem to have adequate wiring.

But, I never tow for more than 5 hours in a single day, and usually between 3 and 4 hours.

I have never measured a drop in battery voltage. I have never been disappointed.

If I had a TriMetric meter or equivalent I may be able to measure otherwise, but I just have not installed one.

I also have never looked to see what size wire they use. I do know it has a 30 amp fuse.
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