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Jim Schrecengost (Schrec)
Registered Member
Username: Schrec

Post Number: 17
Registered: 2-2007
Posted From: 67.165.33.150

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Posted on Saturday, April 28, 2007 - 4:06 pm:   

Can any one tell me the correct location for wiring the generator? I know the field goes to the filed on the regulator and the regulator has a pos and neg which go to the battery. But where does the relay on the generator go to?? The starter/generator relay was replaced on my bus, and I can't figure it out. It seems that I know have two different relays.

Right now the relay wire goes into a new standard raly that has poer and a ground but goes nowhere and the starter relay goes tothe seloniod.

Also right beside my regulator there is a relay that the book doesn't say anything about I figured out all leads but one. Can any one help me?

Also do I have to have the no gen light on the dash, can't I just put in a voltmeter to tell me when the gen is producing? (which should be all the time right)

Thanks
Schrec
George M. Todd (George_mc6)
Registered Member
Username: George_mc6

Post Number: 137
Registered: 8-2006
Posted From: 207.231.81.49

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Posted on Saturday, April 28, 2007 - 5:04 pm:   

Shrec,
You have a can of worms, but lets guess at what has to be there for any system to work?
The field term on the alternator has to go to the field term on the reg as you say. But, the BAT term on the reg has to be turned off when the engine is not running, or the regulator will put full field current thru the alt trying to get power out of a stopped alt, as the reg has no idea whether the engine is running or not. So, either the bat term of the reg HAS to be hooked up thru the master switch, or if it is connected directly to the positive side of the batt, maybe one of the extra relays "breaks" the battery circuit to the reg? (Then the coil terminal of this relay is switched by the master.) This must happen, or you will have dead starting batts the next morning!!! One of these relays could be your "not gen" relay, which controls the dash light, and stops the A/C if the alt is not putting out. Real tough because somebody else has worked on it first, and didn't mark anything. A voltmeter is a good solution to an idiot light, I would install one even if the light works.
Good luck,
George
Jim Schrecengost (Schrec)
Registered Member
Username: Schrec

Post Number: 18
Registered: 2-2007
Posted From: 67.165.33.150

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Votes: 0 (Vote!)

Posted on Saturday, April 28, 2007 - 5:36 pm:   

George,
I don't have a/c or heat so my major loads are all gone. Bassically right now i am too cheap to replace this with a one wire alt. So if i put the pos side of the regulator thru a switch on my dash and after i start the engine i could turn this on and then the generator would monitor the batteries and put out accordingly????

And if I would do it like this couldn't I have coach and start batteries all tied together? I really don't plan to boondock much.
Tom Caffrey (Pvcces)
Registered Member
Username: Pvcces

Post Number: 1073
Registered: 5-2001
Posted From: 65.74.65.197

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Posted on Saturday, April 28, 2007 - 11:06 pm:   

Schrec, there was another purpose for the extra relay connected to the starter system. It's job was to prevent the starter from being engaged when the button was pushed if the engine was already running.

It's all too easy to press the starter button when you shouldn't when you are that far away from the engine, and not at all good for it.

The relay wire is used for signaling the relay that figures out if the engine is running. If the light is on, the starter will work. If the light is off, the heating system will work.

Aside of the relays being cranky sometimes, it's a good system, and not really all that hard to restore.

Good luck.

Tom Caffrey PD4106-2576
Suncatcher
Ketchikan, Alaska

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