Fell WiMEA Owner's Manual - page 18

Connecting the WiMEA Signal wires

Before connecting the Boat Unit Signal wires, 

you must test which kill switch principle is used 

by your engine manufacturer.

The engine signal wires on WiMEA Boat Unit consists of three wires. 

Only two of the three wires are used to connect to the existing kill 

switch wires in your boat. Below are instructions on how to test which 

of the Boat Unit signal wires to use and how to connect them to the 

existing wires in your boat.

Overview of the Boat Unit signal wires (see picture on page 30 for 

overview of the signal wires):

1.  Common – Grey – Always used when 

connecting the WiMEA Boat Unit Signal wires.

2.  Normally Open (NO) – Blue – Used when your 

existing system is a Normally Open kill switch 

system.

3.  Normally Closed (NC) – Orange – Used when your 

existing system is a Normally Closed kill switch 

system.

NOTICE

The engine kill switch system principle varies 

across different engine manufacturers, and 

different year of model, being Normally Open or 

Normally Closed principle. Some existing kill 

switches has three wires, you still only need to 

connect two as described in this manual. The 

principle in the existing mechanical kill switch is 

the same as the Boat Unit Signal wires, where the 

three wires makes the existing kill switch  

compatible with both Normally Open and Normally 

Closed kill switch systems

The existing kill switch system in your engine is either:

1.  Normally Open (NO) – meaning that the kill switch opens and 

disconnects the conductive latch to stop the engine. 

2.  Normally Closed (NC) – meaning that the kill switch closes and 

connects the conductive latch to stop the engine.

The existing kill switch system has two wires, which are connected 

to the mechanical kill switch (the switch to attach the standard red 

cord), mounted in your helm, in the throttle quadrant, on your engine 

or other suitable place near the driving position. To connect the Boat 

Unit Signal wires you must first cut and strip the existing kill switch 

wiring as shown on the picture below:

After stripping the two existing wires, proceed to test the kill switch 

principle, as described below.

See page 39, Wiring diagram for overview of the wire 

connections.

NOTICE

The grey wire on the Connection Cable is the CMN 

(common wire) and is used to connect to one of 

the existing engine kill switch signal wires,  

regardless of the existing kill switch principle.

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