goob8

wow that's a huge upgrade! my plan is to make it my home for a bit so i am going for as much battery storage as possible. luckily the furnace wont be necessary for my needs, and the gadgets im adding wont take too much power and will be more than accounted for with probably at least a 200ah deep cycle. looks like it already had a newer water pump installed which might already be saving some juice! doesnt sound like she's gotten around to troubleshooting yet so still waiting for an update

thanks all for the advice. i am a couple hours away and have relayed the info you have given me. she says that this was not happening before, so i suspect that the coach battery is reversed as Mainseah suggested. either way, i will be replacing the coach battery with 2 walmart/marine batteries or agm (think lithium is a bit over-the-top) i consider it to just be a little electrical configuation fix, but nothing to steer me clear of buying it (no observable water damage, decent engine, working electronics otherwise) i will post an update when she tries plugging it into shore power

I went to look at a 1990 Sunrader yesterday for purchase. The owner had just replaced the starter battery before I arrived. When she turned on the lights in the cabin (above the stove, ceiling lights, etc.), they worked just fine. However, after 10 minutes or so, the lights started blinking. It they would be blinking fast at one moment, and slow the next, and then sometimes they would not blink at all. It's a 6-cylinder with no electrical modifications. Revving and getting the RPMs up did not stop the blinking either. I noticed that the on the battery/water monitor panel (original) that the 'battery condition' was blinking at the same moments the light would blink -- the condition was 'fair', but on every blink the condition would read 'poor'. My suspicions were that either the cabin battery needs replacing in addition to the starter battery that was replaced, but wanted to make sure it doesn't sound like something more complicated than that. Thanks