I just replaced mine six months ago and your panel and meter look exactly the same as mine. I got the original manufacturer to supply it. Hoyt electrical instrument works, 23Meter St., Penacook NH 03303. P/N was 3125-19,0-50 ADC +-2% self contained...
I have the same dinghy/motor set up on my 410DA. After several different attempts I ended up with the Nautley DingyRamp HD roll on extended. Pull the bow up as high as you can get it and tie it off and then I use a harbor freight $25 winch attached...
