Location of 12 volt needed

[Treetopguy]

Just wanted to ask if any electrical experts know what the 12 volt wire color is in my coach. Just taking a stab at asking before I get into it.
I have a 2021 Red 38LL. I'm adding a 12 volt valve to my hot water loop, and want to install the rocker switch and indicator light in the half bath. I could route a line from the chasis batteries, but thought if someone knows of a closer supply line it would help. I'm thinking that there might be one behind the frig, or middle TV, but I'm not familiar with if Tiffin followed a color code on the 12 volt supply wires.

[garykk]

Tiffin usually uses yellow as the color of 12 volt lines

[Warhorse6]

I would confirm with a multimeter before trusting the color coding. Just stick a pin into the wire and find a ground. Much more reliable method.

[jeskibuff]

Originally Posted by garykk

Tiffin usually uses yellow as the color of 12 volt lines

Yellow wires are also usually paired with white wires which are the ground. You'll see the yellow/white combo throughout the coach, e.g. a yellow & white pair going into a cigarette lighter socket.

[Treetopguy]

Thanks to all. I'll be looking at it on Saturday!

[Treetopguy]

Originally Posted by jeskibuff

Yellow wires are also usually paired with white wires which are the ground. You'll see the yellow/white combo throughout the coach, e.g. a yellow & white pair going into a cigarette lighter socket.

Thanks. Finally finished my project. I came to realize that several of the 12 volts wires I found were being controlled by the Spyder system. I then realized that the cargo bay lights were are on a straight power supply with only the motion sensor activating them. I found the wire in the cargo bay, and it was a simple fish up into the half bath with my supply wire.
The valve installed uses only 0.6 amps, so knew this was a good fit.
Thanks for the help.