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The easiest solution is to wire the body like a trailer. Ignore or eliminate the old vehicle wiring, and start from scratch.

Pat - this diagram should do the job - but we can get down to the details when you're ready for them. The diodes only allow current to flow in one direction. Considering the price of the diodes, I'd use the 10 amp diodes. Shottky diodes have minimal voltage drop - they are standard for solar...

This is an official "PING" - I guess. I'm back from the Caribbean - it's my every-year winter vacation. That's the advantage to living in MN -- March is a great time to leave town for a while, especially if you're heading south. Like any one who rebuilds ambulances, I watched every ambulance I...

Wheeled Coach may have used relays to control the turn signals in order to also use them as part of the warning light system. As already mentioned, you can do the job with diodes if you want to simplify things to just turn signals. If your load is low enough, there's Amazon's 5 amp, 100 volt...

And your struggle makes me very glad that I have a receipt for my vehicle from GEV - unfortunately, the insurance company put a value on it that's about twice as high as the purchase price for some peculiar reason. Here in MN, I don't believe they require a vehicle inspection - but they do want...

Left and right turn together may have been used for stop lights.

Interesting - we are both thinking the same. I'm installing a 9 gallon fresh water tank and a 9 gallon gray water tank in the bottom of Cabinet 1 (the old oxygen cabinet.) The tanks I decided on are 10" wide, 17" long, and 14" high, and will fit side by side with room for piping and valves. I...

As the saying goes: "HI, I'm from the government - I'm here to help you!" You lie right back and say: "I'm glad to meet you...."

Great solution!

The last time I did a total brake job on a truck, I used a pressure bleeder, and that did the job just fine. The truck had a cast iron master cylinder and reservoir, though -- I'd be a little concerned with the plastic reservoir my Freightliner has.

I can see where you're at on this -- on the one hand, there is an engine installed that (mostly) works, and that should/could be repairable - but on the other hand, if you go to a Cummins, you'll have an engine that everyone likes and respects. Parts availability for the Cummins would probably...

Hey, Oz - did you ever figure out what was going on with your Mercedes, or is it time to do an engine swap? A conversion to a Cummins should be fairly straightforward since it was a standard with Freightliner (??), but it may take a while to get all the electronics talking to each other.

Since he passed, they're yours. I'm getting ready to head out of town for a few weeks of R&R - can they wait until I get back March 13, or do you want them ASAP?

I've been wondering if a trap or check is really required for the sink drain. If it drains to a gray water tank it could probably be debated, but the flapper style valve answers the question with very little fuss and muss - probably better to use one than to wish one had been used.... By the...

It looks like the drain from a sink that's installed directly over the driver's side extrication equipment cabinet.

How do you remove a transmission overfill? Do you try to drain a pint or so? NO! Any enterprising ambulance owner or EMT will just fall back on the buggy's suction system... (hopefully, any in-service ambulance crew will use a SPARE set of suction gear...)

Ah, the classical smell of "Ditto" fluid from mimeographed copies...

OK, youngster -- Google ""slide film", "Ektachrome" & "slide projector". Or prowl through a Goodwill store until a projector shows up. Oddly enough, there was a newspaper article the other day that said that Kodak is making more Ektachrome slide film than they had in recent years - apparently...

Pat, you gotta remember that the MIL is their own worst enemy when it comes to spending money. Years ago, I got a request to quote on a field lubricator -- that's a truck mounted skid assembly complete with grease & oil drums, pumps, air compressor, hose reels, and all the rest to make a...

If you do decide to use the triangle, keeping it as modified versus the actual design might save you from a DOT inspector (maybe at a weigh scale) - using any kind of a symbol that's associated with hazardous materials these days is probably not a great idea.