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How To Wire Up Dometic DV4100 Roof Vent Fan  

Updated 02/12/2026 | Published 03/01/2023

Question:

How is the lift motor wired to the switch? I have a DV4100 manufactured in 2022/04. I cannot figure out the wiring between the switch/fan motor/lift motor? I know the connection from the switch B is for battery, C is for control board and M is for motor. But I dont know how to wire the lift motor. Thanks!

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Expert Reply:

I have attached for you below a few wiring diagrams for the Dometic DV4100 Roof Vent Fan which I have received from the manufacturer directly.

expert reply by:
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Conner L
How To Wire Up Dometic DV4100 Roof Vent Fan
How To Wire Up Dometic DV4100 Roof Vent Fan
(click to enlarge)
How To Wire Up Dometic DV4100 Roof Vent Fan
How To Wire Up Dometic DV4100 Roof Vent Fan
(click to enlarge)
Lynn profile picture

Lynn

2/5/2026

looking for the lift mechanism for dv4100 roof vent

Kate F. profile picture
Etrailer Expert

Kate F.

2/12/2026

@Lynn I thought this part no longer existed, so I reached out to Dometic and it does exist!! Great news!! I just got it added to the site, the Replacement Lift Arm for Dometic FanTastic Vent Model DV4100 Roof Vent # DMC87JF is what you need. What kind of camper is this going in? Any fun adventures you are excited for this year?

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