Originally Posted by Hawaii Dick
My 12v lights are going dim and blinking and my batteries are showing discharged. All this while I'm plugged into 50 amps.
Anyone have any ideas?
Based on your model and year, I'd just about bet that you have a Dimensions 2000 watt Inverter/Charger on board. While they are a pretty good unit, the charger side has a rep for failing, at some point in time. Our coach, an '04 Itasca Horizon, 36GD with the C-7 330HP CAT, also had that Dimensions unit. We purchased it with 40K on the clock, about 4 years ago. About 3 years after that, making it, plus or minus sometime early last year, we also experienced a no-charge condition of the house batteries while being plugged in.
I trouble shooted 'till the cows came home and, it was simply a blown charging circuit in that Dimensions. I called Dimensions about it and, the tech was real nice and we talked for quite a while. He told me that my unit was/is rebuildable and, re-programmable. He stated that, when I was ready, he'd give me a repair order number and, it would be shipped to Dimensions and, he'd have a priority on it, repair it, re-flash the programming on it for later model circuitry and, send it back. All this for a measly $550.00 plus or minus.
That was a while ago. My dillagent wife, in her gallant efforts, found a 6 month old Magnum 2012 (model, not year) for $750. on craigs list. We purchased it for $650.00 and, it's been working flawlessly so far.
Now, I tell you all this, just in case you exhaust all efforts in troubleshooting and, the final determination is a charging circuit that is shot. The Dimensions unit is what's called a "Quasi-wave" inverter. Basically it's a modified sign wave unit. In the event you actually need a new Inverter/Charger, the preferred unit is a "PURE SIGN WAVE" unit. But, those as you will find, are seriously pricey. And, much of your decision is based on just how much you care about certain electronics that you either have already on board or, will be using.
Ok, enough blabbing. you just need to really determine if you've got an alternate fuse or, circuit breaker that's malfunctioning. Let me ask you this, do your house batteries charge while your engine is running? You can tell by using a Volt-Ohm meter at the batteries when the engine is running. At least you'll know if that side of the equation is working correctly or not. They are in fact, two separate charging systems. But, it's good to know if you can at least re-charge the house batteries from the main engine, to get you out of a jamb 'till you get your main problem fixed.