Installing a dimmer switch
Need some expert advice to install a dimmer in my Grand Design Reflection 31MB. The 12v cabin lights in the ceiling are way too bright. The switch is a blue lighted switch in the main panel in the hal...
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Most 12V dimmers that look like that one are fine for most modern LEDs. I've put a lot of dimmers in my rig!
I agree that it's probably best to disconnect the switch in the panel. I did that because I hated opening the cover just to turn on a light. Remove the switch leads one at a time to see what they do. As I recall, mine are just as you suggest. But testing is smart.
The dimmer needs the neg/ground to properly dim LEDs, where a switch doesn't. If you want to just run the switch lines to the new switch you should be OK.
Hook the wires up as directed by purpose NOT by color. There are several color patterns in use in automotive/RV products, including ones where black and white are reversed! Generally if you get it wrong things just won't work, rather than lighting on fire. Worst case you blow a fuse.
I agree that it's probably best to disconnect the switch in the panel. I did that because I hated opening the cover just to turn on a light. Remove the switch leads one at a time to see what they do. As I recall, mine are just as you suggest. But testing is smart.
The dimmer needs the neg/ground to properly dim LEDs, where a switch doesn't. If you want to just run the switch lines to the new switch you should be OK.
Hook the wires up as directed by purpose NOT by color. There are several color patterns in use in automotive/RV products, including ones where black and white are reversed! Generally if you get it wrong things just won't work, rather than lighting on fire. Worst case you blow a fuse.
