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With that kind of rubber booted head I would say you could discount anything stereo related. Nothing on the back the amp board on my 2010 had those type of heads. The only thing “behind the batteries on my 2010 was the blade fuse holder for my aft bilge pump. Do you have 2 bilge pumps?

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Take this with a huge grain of salt, but copied from here and elsewhere and definitely may not apply to your model, but...


  • Black                                  Ground
  • Gray                                   Tachometer
  • Brown                                Water Temp.
  • Tan/Blue                            Engine warning buzzer
  • Purple                                 Ignition power from Lanyard Switch
  • Purple/White                     Ignition Switch Accessory Power
  • Purple/Black                      Ignition Power from Key to Lanyard
  • Red 10 Ga or 6 Ga             Battery +12 Volts to breaker buss
  • Red 16 Ga                           MMDC from Docking Light CB
  • Yellow/Red                         Starter Solenoid from key
  • Light Blue                           Oil Pressure
  • Dark Blue                            Lights
  • Orange /Black                    ECM Data Link from engine
  • Pink                                      Fuel Sending unit/Gauge
  • Yellow                                  Blower
  • Brown/Red                         Auto bilge-power from breaker
  • Orange/Black                     Bilge pump switch; DC from C/B
  • Orange/Yellow                   Blower switch; DC from C/B
  • Orange/Green                    Heater power from C/B
  • White/Purple                      Stereo Memory-power from C/B
  • Orange/Gray                      Light switches- power from C/B
  • Orange/White                     Horn switch-power from C/B
  • Orange/Purple                   MLS midship-power from C/B
  • Orange/Blue                       MLS Rear Port-power from C/B
  • Orange                                MLS Rear Starboard from C/B
  • Orange                                ACC plug-Power from C/B
  • White/Orange                     Horn-power from switch
  • Blue/White                          Interior lights-power from switch
  • Green/White                       Seat Heater-power from C/B
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@Bozboat  It wasn't connected to anything it was just laying in the front corner noting in the locker that I can see it would connect to?

@formulaben Thanks I will look into it


I do notice my auto bilge does not work, and I can't see to find where it is?  I wonder if that is an option?

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3 hours ago, shawndoggy said:

@mikeo can confirm but that looks like the diagnostic port for the ecm that was under my dash (that I plugged a scanguage into using @mikeo's instructions)

wonder if it was extended to the coffin because helm now has a big sub structure making it less accessible

i have some ground terminations i want to check/improve for my cruise/surf/set speed dash panel after i tightened the switch end  grounds for that panel.  i have a sub wall that sandwiches the old foot well opening and it and the sub are so well fit/tight that i dont want to remove it to get to the behind dash terminations

Edited by granddaddy55
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