Thanks for the reply Dan. I did replace the 50 amp hydraulic breaker with the 80 amp. I do have a battery disconnect switch between the 80 amp breaker and the copper bus. I didn't change anything on the copper bus as it worked fine with the 50 amp breaker and the old batteries. The white cable I referred to is the ground. My unit is a 2013 land mark.
It does sound like I've bypassed the 12 v mini breakers. I don't understand why this happened just by replacing the hydraulic breaker. Any help would be much appreciated. I do have a picture but can't figure how to include in this reply.
Jim,
Normally, the 50 or 80 amp hydraulic breaker would be pulling power from the buss bar at the breakers, not directly from the battery, sitting in front of the battery cutoff switch.
Take some voltage readings at the row of 12V circuit breakers. With shore power connected, and battery cutoff OFF, you should read between 13.2 and 13.6 V DC. If not, no power is getting from the Power Converter to the buss bar. In that case, look for a breaker with a teeny-tiny reset button as pictured below. See if the voltage reading is normal after pressing the reset.
If you are getting 13.2 - 13.6 V, turn off shore power and turn on the battery cutoff. Take readings at the buss bar again. You should be getting 12.6V or so from the battery to the buss bar.
We also have a 12V Block Diagram and Diagnostic Guide that includes some troubleshooting info that may help.
Here's a link to that folder.
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The square 80 amp breaker you've installed close to the batteries is supplying 80 amps to the entire buss bar. What did you do with the original 50 amp breaker on the buss bar that feeds power to the hydraulics?
Also, is the cable from the negative post on the battery attached to the same place as used by the factory? It looks like it's attached to the ground buss along with other ground wires.