Bilge Blower & Extinguisher Relay Board - Blower not working

saltydogz

Member
Sep 15, 2008
229
Chesapeake Bay
Boat Info
2008 350 Sundancer
-Prevs Boat: 290 Amberjack 2005
Engines
Twin MerCruiser Horizon 8.1L (375hp) w/ V-Drives
When I checked out my blowers here is what I found. Starboard Blower was bad, would spin when pushed but then slowed down, blade was rubbing.
Port Blower nothing, checked the wires for power and nothing, dead as a door nail. Moved Port Blower over to Starboard side and runs. So I order two new blowers as replacements.
Started to try to follow the wires for the port blower back to there source using a Power Probe III to check for current, but with all the wires bundled and covered, plus the space in the ER was getting tight I had to stop.

Is there an easier way to trace wires from one end to another?
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From the wiring diagram they must lead to the Extinguisher Relay. I like to check the wires there and then try to follow them back. But my problem now is where is this relay located I searched under my helm without taking it apart with out any luck. Does anyone know where it might be? It says not to install in the bilge area, so I take that to mean the ER is out.

Since I have good power to the starboard side can I just slit the wires there to feed the blower on the Port side with out any problems?
 

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