Do You Have Wiring Diagrams to Install a Second Roof Vent Fan?

Updated 09/29/2025 | Published 05/15/2025

Question:

Hello 2019 Coleman Lantern 250TQ, Id like to replace the original bath fan with a MaxxAir unit, thats easy. BUT, Id like to add a second one toward the rear of the trailer, say half-way between the AC unit and the back edge of the roof. For the life of me, I cant find a wiring diagram that shows me where the builders run wiring. I have a sense that main wires come up from the converter/power center and may run down the center of the roof, branching off to outlets, etc. Do you have access to these exact wiring diagrams so that I can plan the new opening in the rear of the TT and try to avoid running into a bunch of wires? thank you!

asked by: Parker K

Expert Reply:

Hey Parker. Sorry, but we do not have access to schematical wiring or blueprints for any trailers including your Coleman Lantern. I recommend reaching out to the manufacturer for their guidance.

The only solution I can offer to help you with your project is finding you a replacement fan. I saw you were looking at the MaxxFan Deluxe Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift item # MA00-07500K. Have you decided on this one? If you're looking for a comparable replacement to what you currently have I would just need to know the model number off of it.

If you have any additional questions, go ahead and put them in the comment box below and I'll be happy to answer them.

expert reply by: Jerred H

Jerred H.

9/29/2025

Hey Parker, did you decide to go with the MaxxFan Deluxe Roof Vent for your trailer? I'd love to know how it worked out for you, as it could help others trying to make similar upgrades.