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  Adding Electrical Accessory Loads

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Author Topic:   Adding Electrical Accessory Loads
mtwilling posted 08-01-2009 02:48 PM ET (US)   Profile for mtwilling   Send Email to mtwilling  
My Dauntless 16 has a [audio amplifier], VHF Marine Band radio, and fish finder [SONAR]. They are wired to the ignition switch. I can only operate the units with the boat switched on which is annoying. I do not have an accessory switch as it is used for my livewell pump. What is the best solution for this? Thanks.
dfmcintyre posted 08-01-2009 09:02 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
Add one more switch, labeled or just remember it as the "Electronics" switch and wire the three devices to it.

Regards - Don

jimh posted 08-02-2009 10:51 AM ET (US)     Profile for jimh  Send Email to jimh     
The outboard motor wiring harness and its IGNITION circuit are not designed to power everything electrical in the boat. It is not a good practice to add additional loads to the IGNITION circuit of the motor. Move your audio amplifier, VHF Marine Band radio, and SONAR to a branch circuit of the main power distribution.

To add a branch circuit to power more electrical or electronic accessories, you will need a secondary power distribution panel. Typically a Boston Whaler boat will already have a secondary power distribution panel with enough capacity to wire one or two additional branch circuits. Each branch circuit needs to be protected by a fuse or circuit breaker.

Most electronic devices have their own ON-OFF switch; a master ON-OFF switch for all electronics is really not needed.

jimh posted 08-02-2009 11:16 AM ET (US)     Profile for jimh  Send Email to jimh     
[Moved to SMALL BOAT ELECTRICAL.]

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