Community Forums

City Boy · 03-25-2017, 06:00 PM

I own a 2000 National Tradewind 7371 and I am looking for the fuse block(s) for the dash area. I found the fuse block behind the panel that is on the left side of the driver's seat. Are there any other fuse blocks hidden in the dash area? Many thanks for your help.

Rick

wb7auk · 03-26-2017, 03:48 AM

Rick,

What is not working?
As I recall there are a couple of in line fuses in the dash not sure if they are
factory. The other fuse block is located on pass side last hatch on rear.
Do you have the books that came with the coach? If not I have them on file.

City Boy · 03-26-2017, 01:00 PM

Art,

I do have the books for the RV plus the Freightliner books.

My problem is the vacuum pump that makes the dash air vent control work is not getting any electricity. The fan works fine but the air just comes out at the windshield defrosters.

I unplugged the two leads from the vacuum pump, turned on the ignition switch, and no voltage to those leads.

Trying to find out if there is a fuse or a bad relay that is keeping the air pump from working. If I can't find the break in power to that unit, I may have to run electric from a known location and hook it up with a switch so that it will operate correctly.

rick

wb7auk · 03-27-2017, 02:58 AM

I looked at the wiring and did not find the vacuum pump wiring dig. I would think the power to it would come off the controls for the heater and AC.
The right hand control that selects air direction would be my guess.
I would also be looking for a inline fuse on the power lead going to the pump as I recall the heater fuse is to big for that little pump.
Your fix would work but if you can locate where the pump is controlled it might just be a bad connection or inline fuse.

jaywolf · 03-27-2017, 01:51 PM

My 2000 Tradewinds 7373 has a switch for the vacuum pump? it's is under the dash so I do not think it is factory, but it does have a manual switch.

wb7auk · 03-27-2017, 03:05 PM

Quote:

Originally Posted by jaywolf

My 2000 Tradewinds 7373 has a switch for the vacuum pump? it's is under the dash so I do not think it is factory, but it does have a manual switch.

Sounds like someone else had this problem and that was their cure, On mine it is still factory and I might add working lol

Skip426 · 03-27-2017, 03:25 PM

If National used an Evans , dash A/C system , then even the Evans documents and wiring diagrams will be useless , they do not show the pump or where it gets power , only mention is in the vacuum schematic , where it shows a black hose originating at a " Vacuum source" .

City Boy · 03-27-2017, 05:02 PM

Thanks everyone. I will keep looking and maybe there is a hidden in-line fuse under that dash somewhere.

2jerry2 · 03-28-2017, 02:55 PM

Behind the cover by the drivers seat their is a black box. Remove cover and their are Freightliner fuses and relays inside for chassis.

wb7auk · 03-29-2017, 07:29 AM

Rick,

I have looked at the electrical drawings of the Tradewind and the vacuum
pump appears to be a stand alone item that is turned on with the key.
Hope this helps.