1997 Seabreeze 12 volt system issues

[jcjcarrs]

Need advise on repair to 12 volt power for my 1997 Seabreeze by national RV.
Original Owner and certified Parts changer mechanic. Swapped out 2-6 volt batteries, replaced 50 Amp. reset. Now I am going through the process of what's next. Cannot get any 12 volt power to work until I hit the power Boost switch and then Battery disconnect lights up and so does system. Release boost switch and all goes out. It has worked for 24 years.
Any direction would be appreciated.

[Lt Dan]

First off, Welcome to IRV2!

Check for a blown high amperage fuse or circuit breaker in the house battery line. When you use the boost switch the chassis batteries are powering the house systems. The boost/merge solenoid basically ties the two battery banks together.

[chboone]

Do you hear the main battery disconnect operate when you press the switch? If you don't have the documentation for your Battery Control Center (BCC) go to this link to download everything for it. It may help with your problem.
https://rvcustomproducts.com/111979

[SeaBreazer]

I had the same issue on my 1996 national SeaBreaze it was a fuse on the solenoids that are located in the storage compartment by the door where your converter/charger is. Hope this helps I have the wiring diagrams for the 96 I am not sure if they changed anything in the 97 models