I have a 2001 22’ Towlight. I came with a solar panel on the roof but I don’t know how to use it. I can’t find any switches inside.

Hello, Nadine. I THINK that panel was connected to the battery in an "always on" fashion. It should run through a small controller to maintain the charging voltage at a safe level. As far as I know, you needn't do anything to have it supply charging current, other than have the panel in sunlight.

I will say though, that it is a very low output panel, 15 Watts I believe. It's only really good for maintaining the trailer's battery while the RV is in storage.

- Jack

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Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan, LiFePO4 battery 12V DC Electrical System, SoftStartRV mounted on A/C
2024 F150 Platinum FX4 3.5L PowerBoost SCrew

I know that many Hi-Lo solar charge controllers were placed in the compartment behind the fridge. Remove the lower cover and look on the left.

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My Great Wife Joyce
2018 Jayco Jay Flight 21QB
Formerly owned 1705T and 2310H
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU

My 2001 did not have a controller mounted in the system. I did have a lighted off/on switch on my control panel labeled "Solar". I did add a controller to my system. If memory serves me correctly, the solar panel wire is a grayish flat wire that comes down the cloth tube with the other wires.

Bob

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2014 FR Heritage Glen 282RK
2013 F250 HD 6.7L Diesel
Formerly Owned: 1995 22D Fun Chaser & 2901L Classic

My 2005T has the solar controller mounted behind the fridge, but I have never gotten a "charge" out of it.

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Fantastic Wife
2005 Toyota Tundra V-8 4.7L
2705T Tow Lite
1999 21T Tow Lite