Thor Forums

[Oneilkeys]

As Ed’s documentation shows the Trombetta (a solenoid) just hooks the two battery banks together through the use/store switch and then the use/store switch hooks the batteries to the coach. There is also a 50 amp circuit breaker in the engine compartment near the battery which disconnects the chassis battery from the engine. If it pops open, there is a little red or yellow lever that you push back in to hook the battery back to the engine. The Trombetta does not disconnect the chassis battery from the engine and it does not open unless one of the battery banks is charging and gets above 13.1 v. Did you have the use/store in the use mode when you hooked up the charger? If you did, it seems possible that hooking the charger to the chassis battery opened the Trombetta which (if the Use/store is in use) hooks the two battery banks together and that is what allowed you to start the engine. It is like using the emergency start switch to hook the house batteries to the chassis battery, allowing the engine to crank.

As previously pointed out however, your Miramar 34 could be set up differently than our Axis/Vegas. As I understand it, the BCC performs the same function as the BIRD/Trombetta, so that part show be similar. We do not have an inverter, so that adds another level of complexity.