Need help with NAV light wires?

mnm99

Well-Known Member
Oct 2, 2015
2,445
Long Island
Boat Info
2004 340 SeaRay Sundancer
Engines
Twin 8.1 Merc
When I install my new radio it says to tie a line into the lighting circuit. The reason is for night dimming. Once I turn the nave lights on the unit will dim. On a 2004, 340 where can I find a wire? Is there anything in the helm or fuse panel? I don't want to wire all the way to the bow to get power.
 
Can you tap into the switch connection? You could create a simple Y connection at the switch, which should be close to your VHF.
 
When I install my new radio it says to tie a line into the lighting circuit. The reason is for night dimming. Once I turn the nave lights on the unit will dim. On a 2004, 340 where can I find a wire? Is there anything in the helm or fuse panel? I don't want to wire all the way to the bow to get power.

You have the nav wires running up the arch. You may have to trace them back for location. The should wind up coming upto the forward EIM for power.

-Kevin
 
You have the nav wires running up the arch. You may have to trace them back for location. The should wind up coming upto the forward EIM for power.

-Kevin
Yea I guess I'll have to find that one.
 
Yea I guess I'll have to find that one.
You could jump from the power at the arch and run backwards. IIRC, the factory harness goes down into the area behind the mid cabin closet. I do not remember any factory wire running back to the arch from behind the helm cupholder.

-Kevin
 
You could jump from the power at the arch and run backwards. IIRC, the factory harness goes down into the area behind the mid cabin closet. I do not remember any factory wire running back to the arch from behind the helm cupholder.

-Kevin
Uea. I'll probably do that.
 
If your lucky and can find it you may be able to jump a wire at the EIM under the helm.

-Kevin
 
tiara in the snow 01.JPG
Does the old radio wiring have what you need?
 

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