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The ROK40 comes with a full wiring harness 
incorporating a 40 amp relay, a fully terminated two 
pin waterproof Deutsch connector and an illuminated 
switch. The in-line fuse is rated at 5 amps.

INSTALLATION INSTRUCTIONS

1.  Mount the light in a suitable position 
2.  Fit the harness relay in a location near the 

battery, where it will not be exposed to moisture

3.  Fit the switch in a location where it will not be 

exposed to moisture

4.  Reattach the blue, red and black wires to the 

switch as shown in Figure 2

5.  Run the cable terminated with the female 

Deutsch plug to the light and plug it into the 
female plug

6.  Connect the red ring connector to the positive 

battery terminal and the black ring connector to 
the negative battery terminal

7.  Ensure all cables are secured
8.  Test that the switch operates the light.

Figure 1

Relay

Switch

Deutsch  
plug

Fuse

Black wire

Red wire

Blue

Red

Black

SWITCH WIRING

Blue: Switched power out 
(12V DC) 
Red: Power in (12V DC) 
Black: Negative (required  
for switch LED illumination.

Figure 2

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