92D190V Electrical Questions

[Digger Dawg]

OK, I finally found the remains of a probable fuse housing and a similar 6 ga red wire with an identical rusted bolt on it. It runs back under the RT and I'm thinking that it goes to the coach/house battery. Can someone confirm for me my assumptions (yeah, I know) on how the isolator is wired?
A1 - from the Alternator
B1 - to the vehicle Starting Battery
B2 - to the Coach/House Battery

Also, does this need to be connected for the alternator to charge the batteries? I ask because my brand new Starting Battery now needs charging. Lastly, what size fuses should I use? 150Amp? I believe the alternator on this is 120 or 130 Amps.

 

[Digger Dawg]

Lots of questions!
Pictures help when asking how to hook things up.

More likely, the column linkage needs adjustment. That should fix the starting problem.

I assume you have an inverter. That is where a 150 amp fuse would be used.

#6 wire should be fine for the converter hook up.

200w is! Well 500 would be better.

DC to DC converter is overkill. Like I said. A diode will be all you should need. Many isolators are just that. A diode circuit.

I know you asked more questions, but it's time for sleep.

Now that I've found the other end of missing fuse connection, I'm gonna check out the isolator I have to see if it is any good and reinstall/replace it. I found a mechanic with a passion for old cars & trucks to help me give this beast a thorough check to see what all needs attention before I put her on the road for any long haul. Yep, more solar would be better and I may see about adding some portable panels to the 200W I'll be putting on the roof.

 

[Digger Dawg]

OK, after going through the roadtrek electrical diagram notes that the awesome Mr. John Slaughter did http://www.metrotrekkers.org/utility/electrical.htm, I found out that those rusted out or broken little boxes are actually thermal circuit breakers and that they are usually either 30A or 50A. I believe that the two in the coach battery line from the isolator are 50A so that is what I ordered. Today, I'm gonna try and test the isolator just to see if it still works.