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Also check and see if the engine fan is set to come on whenever the AC is on. Not sure about the GM stuff but on the other medium duty trucks the engine fans sucks about 15hp and makes a hell of a noise. With Freightliner it is just a setting in the engine configuration.

This is sometimes used to make the wiring more failsafe. If the switch wire gets grounded (in an automotive system) it fails to the on position the same as if the switch wire is switched to the negative.

In general just connect as per the wiring instructions and never ground anything unless the instructions tell you to. Also it is good practice to never rely on the body/chassis to be a conductor. Try to run a negative cable wherever it’s needed.

Ye I agree with DWH a lot of controllers are positive ground. Make sure that the panels and the controller are not earthed except through the battery lead.

Hmmm maybe I should just drive up to Flagstaff and get Ross to do them for me [emoji1]. We could compare toilets and shower designs at the same time. 240 miles @ 8mpg = 30 gallons of diesel @ $2.65 a gallon that’s only $80 in fuel and 5 hours driving. Maybe renting is the answer.

I like the look of those expanded tube connections but the cost of the tooling is prohibitive. I will probably just use the crimp ring style. The tools are cheap and small enough that we can carry them with us. We do not foresee having a mains connection to our water system so it will be 12v...

Funny you mention “putting it to use”. Since I am traveling at the moment I did suggest to the missus that she use it for the next week or so and test it out. The reply I got was not repeatable on an open forum but it translates to “no”

Where ever possible all water lines and tanks will be inside the heated envelope. But the transition from side to side involves either running it in the ceiling cavity which is an aluminum skin with some insulation or running it under the floor. I am leaning towards under floor for the...

Go figure. I have never seen PEX heating pipe. Definitely not on the shelf at my local Home Depot in Phoenix. I wonder why not [emoji848]

Hmm I could run the heating lines in the same insulation for the boxes on the passengers side. Probably all going to be pex anyway. I had planned on color coding with the red, blue and white so I may need to check alternative sizes or types to distinguish between heating (glycol) and water. I...

What do you think about running all the water lines in the same insulation so that the diverted water can heat the lines in extreme conditions? I may have a set of water lines running semi exposed under the box from side to side.

From the other thread.

In the thread I had going about where to buy the Nature’s Head there was a couple of suggestions about drilling holes to help reduce the possibility of that happening. If I was smart enough I would link across to it but my phone is smarter than I am and I cannot work out how.

Ross! Since I am fundamentally FDL (fat dumb and lazy) I will hold off on any covers etc until the need is proven. Saying that, we are considering putting a shower curtain in to keep the water off the toilet and off the concertina door. If done with a pivot it could also flip to provide an...

We will not be doing this for now. Remember that this truck will be going up in the air by about 16” or so. Since we use the fridge much more often than the freezer it needs to be the lower unit. As such the stairs restrict it from sliding inside. On the last truck we had the fridge sliding...

To answer Scooter. No we don’t have access from the inside as well as the outside. We decided that the outside was more important to us than the inside. To Riderbloke. We use that area as it gives us easier access since we mostly cook outside. We have very little use for the fridge inside. And...

Keep searching. I am sure someone posted on here with the same problem and how to fix it. It may of been Stumpalump.

Had a few hours to spend on the truck this weekend. Managed to get the Beta version of the fridge and freezer slides installed. Not happy with the freezer slide. As the freezer is only opened once a day I tried to use the 500 lb slides horizontally. Definitely too much flex that way for a...

Onboard engine driven compressor to run the air brakes and more importantly the air horns.

Do t need an engine just the diesel water heater. You could use a smaller Webasco heater and cover both hot water and heating but being a trailer there is not much advantage in single fuel source. I have figured out a few uses for the Scuba holes. One already has my 110v outlet and will...