Gen Sets that auto start and stop

It's a Magnum ME-AGS-S. Here's the link to the companys web page. A picture of the unit and links to download the owners manual and wiring diagrams are on that page also. I mounted both the unit and the remote panel inside the RV near the other control panels.....less wiring and easier.

Here's what Onan says about after market installation...YMMV....Dennis

Energy Command 30 (EC-30) is a very affordable option if you're purchasing a new RV, but it gets more expensive if you wish to add it to your existing vehicle. Connecting all the features of the EC-30 requires running wires from the air conditioner, transfer switch, house batteries, chassis batteries, safety input and generator back to the location of the control. Depending on the specific design of your RV and which features you wish to connect, it will take a technician 8 full hours to properly install an EC-30. If you're looking to purchase an EC-30 for your existing RV, have the dealer quote on installation as well so you know the full cost of adding this feature. Cummins Onan engineers do not recommend RV owners to attempt to install the EC-30 on their own as it requires knowledge of electrical codes to safely and correctly install all the wires.

8 full hours...??? that could be really expensive..:E..D

Onan has a newer option for self-installation. It's pricey. About $525 from a quick search. You might have to buy a wire harness too. I'm not sure on the price of that.


From the Onan website:

– Starts and stops the generator as required to maintain battery health
– Will only start the generator if shorepower is NOT present
– Automatic generator turn on to meet air conditioning demands if coach gets too hot
– Wireless - RV owners can install themselves
Introducing the newest RV power generation solution -- Energy Command™ AutoStart . The EC-30W is the first autostart system specifically designed for RV owners to install themselves. This provides worry-free control for most Cummins Onan diesel, gas, or LP generators. While high-end diesel RVs have added autostart as a factory option in recent years, most RVers who could use an autostart system on their existing RV don’t have one. Because the EC-30W is wireless, the average RV owner can install it on their own without paying for installation. At the same time, the EC-30W maintains several features that are unique to the Energy Command family.

I installed the Magnum AGS-S on my Onan QD5500 several years ago. Works great. Found the one I bought on EBAY for a great deal. Easy install. Amazon has is listed also.

neschultz wrote:
It's a Magnum ME-AGS-S. Here's the link to the companys web page. A picture of the unit and links to download the owners manual and wiring diagrams are on that page also. I mounted both the unit and the remote panel inside the RV near the other control panels.....less wiring and easier.

Based on the diagram shown this does not look hard to install at all.