| Re: [GMCnet] Isolator -- bypass? [message #326853 is a reply to message #326841] |
Thu, 07 December 2017 13:55   |
Dave Stragand
Messages: 307
Registered: October 2017
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Senior Member |
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I pretty much only get time to work on this coach during my lunch hour,
but hopefully all of the little 30-minute blips will amount to
something.
Today I placed a jumper from the alternator post to the lower post on
the inverter, and immediately started seeing 13.8 - 14.0 V inside on the
cigarette-lighter voltmeter. There was a noticeable difference in the
brightness of the inside lights, etc.
All in all, I'm pretty sure that the inverter is shot. I have a 95-amp
replacement inverter on the way, which should prove it definitively.
I also believe that the current alternator is a 100-amp version, due to
the extra mounting 'ear' on the back side of the case. Can anyone verify
by this photo:
http://www.gmcmhphotos.com/photos/member-galleries/p64089-alternator.htm
l If it is 100 amp, I could imagine that the high-amp alternator killed
the 80-amp isolator at some point
-Dave
1978 Transmode (403)
Pittsburgh, PA
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1978 Transmode (403)
Pittsburgh, PA
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