Before we start...I know,..."Check the grounds". There is a .50 amp draw on my coach battery all the time. I can shut off the battery disconnect and (it will draw nothing and)I have nothing to worry about but this does not make it right. I have pulled every fuse I can find and can not get the draw at the battery to read zero. any suggestions? Perhaps a half amp draw on the battery is standard?

Did you check the lpg alarm, carbondioxide alarm and the smoke alarm? If left on they would draw a small amount. and check cb radio and radio and players. sky

quote:

Originally posted by sky:
Did you check the lpg alarm, carbondioxide alarm and the smoke alarm? If left on they would draw a small amount. and check cb radio and radio and players. sky

Very good... Also, remove the wires at the Alternator and check again.

Ultimately, you might just end up physically tracing wires and disconnecting things. Check the paralleling relay, too. I had one go bad internally.

I had a similiar situation and by luck I found that the little air pump that is used on the passenger seat for the lumbar support was pulling current. I disconected it since it is not used and resolved my problem.
Not sure what fuse that runs thru but something to consider.

Ray

Many thanks to all! Turned out that the recomendation from Bill N.Y. was the key to my sucess this time. (I just replaced that alternator too!). Too make a long story short, the system was grounding out in the alternator itself and I pulled it, took it back to where I bought it, he fixed it with apologies and free of charge, and it was reinstalled in a few hours. Again, thanks to all!

The way Barth wired my coach, the alternator is not connected to the coach battery unless the isolator diode is conducting or the paralleling relay is energized.

I agree with bill h, that there may be another gremlin. However, if the battery called "coach" is actually the engine battery, then the alternator is the prime suspect, and you've fixed it.

quote:

Originally posted by Rusty:
I agree with bill h, that there may be another gremlin.

It is also possible that the coach is wired differently than what is standard RV practice, given its non-RV origin and history.

quote:

However, if the battery called "coach" is actually the engine battery, then the alternator is the prime suspect, and you've fixed it.

There is always an opportunity for confusion when speaking of batteries. The "house" battery term leaves no room for confusion. Sometimes, that battery is called a coach battery.

The "starting" battery term also leaves no room for confusion. "Engine", also leaves no room for confusion. It is often called the truck or the chassis battery.

Philosophers from Socrates to Eric Hoffer have said we must first "define our terms".