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Figure 1

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adaptor. To use the adaptor — 1) plug the adaptor into the socket; 
2) cut the terminals at the end of the 
FuseMaster harness; 3) crimp two fe-
male spade connectors onto the wires; 
and 4) attach the wires to the adaptor 
(either wire works at either post).

 

5.

  Test-fit the access panel, to ensure 

that it can be replaced over the FuseMaster harness.
 

6.

  If necessary, use wire ties (not included) to secure the 

FuseMaster harness in place.

CAUTION

  If the harness is not secured the electrical connection 
may be broken, preventing the circuit from functioning.  
FuseMaster will not operate.

 

7.

  Look for a mounting surface for the switch close to the fuse 

box. (The preferred location is on the fuse box access panel). 
This mounting surface must meet the following condi

tions:

• 

Choose a location where the switch will not be turned on or 

off accidentally, but where it will be accessible to operate.

 

The switch must be installed on a plastic surface which is 

¼-inch thick or less. 

  There must be enough space for the switch.

  There must not be any metal directly behind the mounting 

location.

  There must not be any wiring or electrical components di-

rectly behind the mounting location.

  You will remove the mounting nut (Figure 1) and the wiring 

connectors (Figure 1) to install the switch. You must be able to 
reach behind the switch to reattach them.

 

8.

  Using a power drill with a ¾-inch bit or a ¾-inch flat auger 

bit, drill a hole at the mounting location you have chosen.
 

9.

  Remove the two wires from the switch by pulling on the 

connectors until they separate from their terminals.
  

Note: if the connectors are difficult to remove from the 

terminals, move them back and forth against the terminals as 
you pull out.

 

10.

  Remove the mounting nut.

 

11.

  Position the switch in the hole, with the white dot side 

(Figure 1) up.
 

12.

  Reattach the mounting nut, with the serrated side toward

Figure 2

the switch, and hand-tighten it.
 

13.

  Reattach the wire connectors into their terminals on the

switch.

 14.

  Where possible, slide the black split loom over the wiring 

connections and secure the loom with electrical tape.

 15.

  Tape the wiring if there is any exposed metal in the im-

mediate area of the switch.

 16.

  IMPORTANT — Install the fuse you removed from the towed 

vehicle into the FuseMaster holder (Figure 2); confirm that the 
fuse is fully seated. Replace the protective cap (Figure 2).
  

Note: if the fuse you removed was an ATM micro fuse, 

install an ATM mini fuse (not included) of the same amperage.

CAUTION

  ALWAYS match the amperage of the fuse in the Fuse-
Master harness to the fuse removed from the towed ve-
hicle’s fuse panel. NEVER install a fuse with more than 
a 20-amp rating into the FuseMaster harness.
  Failure to follow these instructions may cause severe 
damage to the vehicle’s electrical components. Other 
consequential, non-warranty damage may also occur.

 17.

  If desired, mount the included ‘Tow’ sticker under the switch 

assembly and the ‘Drive’ sticker above the switch assembly.

Operating instructions

 

To drive the vehicle

 — flip the switch so that the side with 

the white dot (Figure 1) is depressed.
 

To tow the vehicle

 — flip the switch so that the side with the 

white dot is not depressed.

  Never flip the switch to the “tow” position while driving. 
If the switch is flipped, the electrical functions of the switch 
FuseMaster has replaced will be lost. 
  A loss of power steering, power brakes and/or a loss of 
vehicular control may result.
  Failure to follow these instructions may cause property 
damage, personal injury or even death.

Troubleshooting

  If FuseMaster fails to operate as described, confirm that…

continued on next page 

fuse socket adaptor

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