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Old 03-15-2020, 09:00 PM   #1
Junior Member
 
Brand: Thor Motor Coach
Model: Freedom Elite 24HE
State: Michigan
Posts: 5
THOR #17874
Class C TV outlet ignition switch interlock

I put in a small 300W inverter so my wife and son could watch TV from the back seats if they wanted. Got it wired in with a Xantrex auto transfer switch so it powers the general (non-GFCI) outlets when shore/generator power aren't running. Thoroughly tested it in the driveway and everything was great... until we actually took a short trip this weekend. As soon as I started the engine the TV went dead and wouldn't power back up. I immediately assumed the cheap inverter was the culprit until I found the other outlets working fine.

I didn't realize there's an interlock on the outlet behind the TV that locks out the power when the ignition is on. Quick trip to the internet and found some vague references to pulling a fuse (but never found exactly which one) and most of the responses were to just pull the outlet, the interlock relay should be glued to the back. Well, mine wasn't like that. It was just a regular outlet with a romex feed.
I found a YouTube video of a guy with a Class C and his was in a metal junction box behind a false wall in the same cabinet. Mine didn't have any walls that looked like they could be removed without completely destroying the cabinets so I started getting nervous. I started pulling the control panels trying to follow the romex from the outlet back towards the breaker panel and using my AC voltage sniffer to check where the power went live again.

I finally pulled the microwave and found the junction box with the ignition lead and lockout relay. All you have to do is pop out the 2 pin connector and you're good to go. This is probably the same location in my 2018 Freedom Elite 24HE as its twins the Four Winds and Chateau 24F and maybe some similar years/floor plans.

Yes, the lockout exists so the driver won't be distracted while driving but the TV on its swingarm is past my line of sight anyway. Hope this saves the next person some frustration.
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Old 03-16-2020, 07:48 PM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: 29h outlaw
State: New Jersey
Posts: 272
THOR #5248
Yep, I just did the same thing in my 29h.
My junction box was in the overhead above the door, behind a false side.
My unit has a 1000w inverter from the factory, so while I was there I extended the power to another receptical in the back of the frig (the frig is next to the door).
Now I can move the refrigerator plug to the new receptical and run the frig on 120 instead of propane while traveling.
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Old 03-19-2020, 12:19 AM   #3
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Brand: Thor Motor Coach
Model: Freedom elite 30fe
State: South Carolina
Posts: 32
THOR #14612
We have 2017 total freedom elite 30 F. I want my kids to watch TV while we were down the road. We had no inverter in our RV. So I turn my generator on the TV does not come on because it’s tied up on the ignition. We installed 2000 W inverter under the dinette and change my batteries 2 two 6 volts batteries under the steps. The run was less than 5 feet to inverter. Then we ran two perm so outlets on the outside of the booth from inverter. We also ran one extension wire behind the TV. I just plug my TV into the extension wire and turn my inverter on. Everything works great. I was a little nervous to Use transfer switch. I wanted to keep it simple. . But I would like to find where those ignition wires are so if we have a generator on we can use the TV. Do you know exactly where they will be in the freedom elite 30 FE. Thank you.
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