Jack, the 13 volt reading I was referring to was resting voltage and that was done with a non digital voltmeter. A little past history...I recently went thru the electrical cabling on my truck (mostly because of my intermittent Gryphon problems) and upgraded what is commonly know as the "big three" cables. This included the main ground cable. A check of the resting voltage of my new battery (as done at Auto Zone) showed 12.71 volts. The gryphon quit responding one day after the truck had been outside in 103 degree heat for most of the day producing the symptoms I described (back light only, no response when truck turned off). I attempted the reload of the tune only after 2 days (3 separate times each day) of trying to get the gryphon to respond the way I normally would. That's where I stand.....any thoughts? I'm at a loss but, with all due respect, I don't think the problem is my electrical system although everything would seem to point to that.
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Mon, June 25th, 2012, 09:43 PM
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