Well there's goodnews and bad news. Good news is that there are good through wiring diagrams for the way your model year was built. The bad news is that as RV get older, they tend to get changed by each owner and that DOES NOT show on drawings, so we have to go carefully and watch for changes!!
But then the battery wiring depends on which chassis you have, Ford or Chevy, so this is the basic battery wireing but you will need to sort for Ford or Chwevy. The correct drawing will be labeled near the lower right corner. Page 1 Chevy, page 2 Ford!
https://www.winnebago.com/Files/File...992/106338.pdf
As a help to sort battery cables, the OEM were marked with tape at each end of the cables, so this "may" still be a help if not too many have been changed out?
For charging coach while driving , you have a mode solenoid that connects the two batteries together at different times.
This drawing :
https://www.winnebago.com/Files/File...992/105242.pdf
sheet 1 shows the solenoid at lower right.
Click this to get a better view.
There is a wire labeled LR that comes from the front. it is hot when we push a switch called different names on different RV. Maybe boost, aux, or such?
When we push that switch the LR lead brings 12Vdc down to the coil of the solenoid which should operate the solenoid and connect the left big lug to the right one. The metal solenoid body and mounting are used to ground for LR, so make sure it is good if trouble there!
One side goes to coach battery and the other to chassis battery but on this drawing it is not clearly labeled, so I hesitate to say which side is which?
This is where the charge connection should be made, but it can be hard to get to this solenoid, so if it is buried, I look at the batteries as easier to get to them. I only dig out the solenoid if I find I have to do it!
For testing the solenoid, look at the voltage of each set of batteries and they are likely to be different.
Then if you have somebody push the dash switch , you should see the two voltages match as they connect together! If the two don't match up, then you may have to get to the solenoid and it is one that does fail reasonably often.
A second way to decide if it is working right is to look at the voltages and then start the RV engine. When the engine is running the LR lead is also made hot and the two sets of batteries connect. When working right, you should be able to get the voltage from the alternator on both batteries and it will go up and down as the engine is revved!
If the batteries go up/ down when the engine is running, they are getting the charging but they may also be too old, too weak, etc to hold that charge.
Another big point to remember is that the cables need to be clean and tight for this to work. A dirty/corroded cable on positive or negative side can kill the best operation of all the rest!
Linear Mode
