Wiring - what to do with negative wires - Fiberglass RV
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Old 08-16-2022, 05:06 PM   #1
Junior Member
Name: Kate & George
Trailer: Boler 1300
Posts: 12
Question Wiring - what to do with negative wires

Wiring question - so, I added this larger fuse panel to make room for 2 new 12v accessories. The existing negative wires all go to marrette in a switch box that is labeled “UP for 110”. Should I bring the new negative wires here (already a bit crowded), or somehow patch down to the fuse panel, and bring the negative down to there? Seems like it should be the latter?
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Old 08-17-2022, 01:38 AM   #2
Senior Member
Name: Joel
Trailer: Casita SD
Posts: 123
One common solution is to install a negative "buss bar" for all the added 12 volt accessories - and then connect it to an existing ground point.

Here's an example.

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