old lowrance depth finder with black box

midnightrider1818

Petty Officer 2nd Class
Joined
Aug 17, 2009
Messages
182
hey guys. so I have a 89 Larson and the depth finder quit working on it. I know it has a black box mounted on the side of the boat. one cable comes off of it and runs back to the transducer which is a in hull design. the other cable has a red black and white wire which the black one is for the light. the red one is power and not sure what the white goes to and it comes off the black box. the other cable comes off the box and runs to the gauge. on the gauge there is a red wire all alone and they have it going to ground. does anybody recognize this configuration. was working good and I was in the dash messing around then it quit. hhhmm.
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
40,583
on the gauge there is a red wire all alone and they have it going to ground.

It would help to know which model the sounder is

If there is only one wire going to the gauge, then there is another which broke off
 
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