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Old 03-06-2008, 06:15 AM   #1
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Workhorse Chassis Owner
Join Date: Mar 2005
Location: Savage, MD
Posts: 233
Coach - National '05 Sea Breeze on Workhorse

Background: House batteries were not charging while driving. Repair shop said batteries hooked up wrong. (I don't see how they could, as I've never had both sets of batteries disconnected at the same time.) If my memory is right, there were two red wires on house and one on chasie.

Well, they moved the smaller red wire to the chasie battery. Now house batteries charge, in fact way way high. In the past they have charged to 14.3 (on a digital volt meter) and now they are charging at 15.8 (Yes I know the high voltage is bad, but need to correct wiring first.)

I think maybe my diode bridge burned out (for some reason) so when the house batteries would not charge the repair shop fix was moved what might be the charging cable. (I think the batteries are now hooked up parallel.)

First question, typically how many positive wires go to which batteries?

I don't know if diode bridges are used, but I don't see how two sets of batteries can be charged without one, so does anyone know where their diode bridge is locted on your coach? I thought it would be in the inverter area, and it isn't. Looked around engine area without much luck.

Third question (I think) what is a "high voltage" when driving? Prior to replacement of instrument cluster (new one does not have a built in volt meter) once up and running, I always had 14.3 volts. Why would I show 15.8 volts on the house circuit when driving. Bad alternator? bad regulator in alternator? bad diode bridge?

Would appreciate the assistance.
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Old 03-06-2008, 06:15 AM   #2
Senior Member
 
Workhorse Chassis Owner
Join Date: Mar 2005
Location: Savage, MD
Posts: 233
Coach - National '05 Sea Breeze on Workhorse

Background: House batteries were not charging while driving. Repair shop said batteries hooked up wrong. (I don't see how they could, as I've never had both sets of batteries disconnected at the same time.) If my memory is right, there were two red wires on house and one on chasie.

Well, they moved the smaller red wire to the chasie battery. Now house batteries charge, in fact way way high. In the past they have charged to 14.3 (on a digital volt meter) and now they are charging at 15.8 (Yes I know the high voltage is bad, but need to correct wiring first.)

I think maybe my diode bridge burned out (for some reason) so when the house batteries would not charge the repair shop fix was moved what might be the charging cable. (I think the batteries are now hooked up parallel.)

First question, typically how many positive wires go to which batteries?

I don't know if diode bridges are used, but I don't see how two sets of batteries can be charged without one, so does anyone know where their diode bridge is locted on your coach? I thought it would be in the inverter area, and it isn't. Looked around engine area without much luck.

Third question (I think) what is a "high voltage" when driving? Prior to replacement of instrument cluster (new one does not have a built in volt meter) once up and running, I always had 14.3 volts. Why would I show 15.8 volts on the house circuit when driving. Bad alternator? bad regulator in alternator? bad diode bridge?

Would appreciate the assistance.
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Bill N8HDW & Nancy N8HDV
2005 Sea Breeze 8341 on W-22 Chassis
2008 Saturn Vue I-4
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Old 03-07-2008, 03:37 AM   #3
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There are several types of charging multiple battery banks. An isolator, electronic charging controller, or dual output altenators can be used to properly recharge batteries. This system will be installed by the coach manufacturer. You should be able to find out from some of our other members as to which type is used on your coach. It sounds like the voltage regulator from the alenator is not working properly. This may or may not be a Workhorse issue. I would certainly inquire of them if it is or not. Good luck and keep us posted as to what you find out.
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