Hi everyone, again, thanks the inputs, is great feedback. Here's an update. I pulled the battery and trickle charged overnight. Put it back and it started the MH. After reading the echo charge manual, and see posts about life of house batteries, I'm. Thinking they are probably due for a change soon. it's a 2003 and I don't see any paperwork on battery replacements. The echo charge manual said it will only charge the engine battery if they house batteries are over 13 volts.
Does that seem right? I measured them on + 6v and on -6v across each battery. So I presume that's 12v or somehow I measured them incorrectly. I need to brush up on my dc electronics I guess.
I'll bring the Mh back this weekend and see how things are fairing.