Got the control circuit wiring done and the up/down switch mounted on a bracket. Not a fancy bracket, but a tough one! It looks OK and will be good for testing and maybe mobile.
I can see moving the DK3 from home to portable stand or to car. So I may have to make up a few control circuits of that type.
Tried it out and it works..though I found my gel cell was practically dead. Need to make up something to put that in...so I have a place to mount a power distribution panel with some cigar sockets and powerpoles. And then keep it charged!