34 year old CLASSIC 300 DA, towed almost anywhere behind the Duramax Dually Crew Cab.
Engines
16 cyl, 700 cu. in./Alpha I's
I installed one in my 87 and 89. Bolt it up and attach the wires. If you have an existing charger it's a whole lot easier, but it's not hard to run the wires either way. That's the same unit I have in my 89. It's pretty easy!
'76 SRV195 (our first) -> moved up to
'78 240 WE (now 4 sale because ->)
'82 260 DA shared
Engines
A Ford 351, a couple GM 350s and a Cummins 6BT to pull it all (W250)
What he said. Just make sure your wires are properly sized. They say to check the batteries regularly so they don't boil dry but mine seem to remain fine...
I had to put a new one in both my 230 weekender and in my current boat, not that hard of a job. You should have the 110volt wire already run, if not run it from behind the pannel. You should already have one though, it will have a breaker in the pannel. The hardest part for me was to find a place to mount the charger. I think on the 230 there was a piece of plywood bolted on somewhere that kept it vertical, that's where I put the new one. The original was a charles 30 amp I think. It should be in the front of the engine bay on the starbord side.