| Re: [GMCnet] Isolator -- bypass? [message #326823 is a reply to message #326803] |
Thu, 07 December 2017 00:25   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma:
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Something is not Kosher here.
The alternator putting out 14.7 volts is great with an isolator installed. The alternator monitors the voltage on the engine side of the isolator and raises or lowers it's output voltage trying to maintain around 14.0 volts at the engine battery. You are saing that is is only 12 volts.
So what you are saying is the alternator is doing it's job correctly while the sensing line to the alternator must be low. I am thinking you have a wiring error(s) somewhere.
Are you positive that you have no 12 volt supply to anything on the house side of the coach?
I am looking at a wiring Labeled "78 GMC Transmode" and it shows an auxiliary battery, Boost relay, Isolator, and Onan Generator.
If you send me your email address I'll forward this diagram to you. It looks the same or very similar to a normal (non-Transmode) 26 foot GMC.
If you want to talk about this on the phone, look up my unlisted number on the "Black List" under Indiana. If you get my voice mail when you call, speak SLOWLY and repeat any numbers twice. I have a hearing loss and if I do not understand your message I will not be able to call you back.
Ken Burton
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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