rvhelpdesk



RV Help Desk



RV Education

 

RV Resources and Tech Advicerv tech advice

Mike Wilson is a RVDA Certified Master RV Tech. with over 25 years experience  and now he's sharing his knowledge with you.
Mike is the president of Wilson RV and developer for The RV Help Desk.

 

A&E Awning Disassembly
CAUTION: We recommend all awning work be done by a
certified professional.
Awning disassembly is dangerous and can cause serious injury.

7 Things you need to know before you make Campground Reservations

What's that Rotten Egg Odor in the Hot Water?

Air Spring Kits
can be very helpful in leveling and stabilizing a vehicle.

Driving For Fuel Economy 
For years curiosity has kept me searching for the most economical way to drive.

RV Satellite
Satellite television is a good choice for an RV. Satellite service is very similar to a home system. The primary difference is in the antenna (dish).

RV Generators
RV generators are set up with a cooling system, air intake, and exhaust system

Top 10 Towables
On the new 2006 list

L.P. Safety
Liquid propane is referred to as L.P. L.P. is a fuel used in RV’s to provide a flame for items such as stoves, heat absorption refrigerators, barbeque grills, hot water heaters, and furnaces.

RV Water Systems
RV’s have 2 water systems, city water and onboard (potable) water.

RV Holding Tank Use
Holding tanks are the built in tanks that hold any waste coming from your RV. Typically, there are a series of tanks.  

Understanding Your RV Battery
The batteries in your RV are the “heart” of the electrical system.
Good batteries with the proper charge are important for many reasons.

Season Prep - Spring 
Preparing Your RV for Use 

You need to prepare your RV for the first use of the season. Here is a list of important items and systems to inspect and test. 
1.  Outside:  One of the biggest problems we see with RV’s is water leaks. more..

 

Basic RV Power 
RV’s have 3 power sources. All 3 are necessary in certain circumstances. 
“Coach” refers to the camper portion of the RV. “Chassis” refers to the truck portion of the RV.  
 1. 12 volt dc power: There is a “coach” battery or series of batteries. This battery supplies
 power for the lights, water pump, hot water heater ignition,
 more...

RV Refrigerator
An RV refrigerator is quite different than a conventional refrigerator.
RV refrigerators  are a heat absorption type instead of a compressor type.
They almost always feature 2 way operation. 1 way is 120 volt ac electricity and 1 way is L.P. gas. more

RV Refrigerator Repair
There are several areas of an RV absorption type refrigerator that can cause failures. Most common failures are cooling units and electrical problems.
The cooling unit is the part of the RV refrigerator that contains the chemical. If you smell ammonia in the vicinity of the refrigerator, the cooling unit is leaking. That is considered a major malfunction. more
 

Dinghy Towing Series 
 

  Tow Dolly
I will start with tow dollies. A tow dolly is a 2 wheel device with a platform and ramps that attaches 
to your RV’s tow hitch. A dolly requires attachment to your RV, driving your tow vehicle up the ramps 
to the platform, latching the dolly so the ramps are in a locked position, and strapping the tires to secure 
the vehicle to the dolly.

 
  Towing 4 Wheels Down
Towing 4 wheels down is the preferred towing method. 
In my opinion any vehicle that does not require an additional driveline device is recommended. 
We have been installing tow systems for nearly 20 years. In the beginning the choices were very limited.
If you wanted to tow 4 wheels down, 
the choice was either a Honda or something with a manual transmission. Now there are many more choices. 
There are also some driveline devices that can be added to make nearly any vehicle towable. 

  
 
Lights & Wiring
There are several options for rear lights while towing. Light bars and separate lights are one method.
Using the towed vehicles existing lights is another method.
A light bar can be used if towing for a limited number of times. There is little labor and time involved in set up.
Since most RV’s have a wiring connector already in place, you can simply run an
extension along the tow bar and back to the lights.
 

  Tail Lights
Now for the difficult part: tail lights.
Tail lights are difficult for several reasons. Isolating the circuit from feedback using a diode
will require splicing or running new wires to several locations.
Typically installing a diode at one rear light fixture will only power 1 light. There are some options to operate both lights.
You can rewire the rear light from the other side and splice in to that diode, or you can use 2 diodes.

 Braking Units
There are several brake boxes available for your towed vehicle. Blue Ox, Roadmaster and Brake Buddy are 3 examples.
A brake box is a simple to use device that sits on the front driver’s floor of the vehicle.
They are powered from a 12 volt outlet or can be hard wired if an outlet is inconvenient or doesn’t exist.
These boxes operate from an inertia mechanism..

 Air Brakes
There are several braking units that will work with coach air brakes.
This article explains Blue Ox’s BrakeSafe and Roadmaster BrakeMaster units.
These systems are quite simple and work very well, with the braking unit operating in tandem with the coach brakes.

 M&G Braking Unit 
M&G braking is a good choice for coaches with air brakes.
The advantage M&G has over other braking units is