New Master Light Switch

October 5, 2017

Melinda asked me during our last trip,  "Why do we always have to flip on 3 light switches in the bathroom?  Why can't it be just one switch"?    


After thinking about her questions for just a split second....I said, "You're right. Great Idea!"


Here is the new master switch installed above the three existing switches.






I guess they put in 3 switches in case you are REALLY trying to save power when dry camping, but I fixed that!!


Here is my solution....very easy. 

1 - Disconnect all power....both 12v and 120v

2 - Located the main 12v line, that feeds the 3 switches via a loop. (mine was a red/white wire)



3 - Cut hole for new switch and splice the main 12v line. 




4 - Attached main 12v line to the master switch.  (Link to Master Switch from Amazon



5 - Screwed switch into wall....Done.



We can now leave the 3 switches in "on" position and turn them all on with the master switch. If we ever want to turn off a individual light, we just simply use original switch.



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