April 28, 2003
Lit. No. 26513
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Drill a
5/16" Hole
Use these instructions to modify your V-Plow Electrical
Tester for use with the Isolation Module. The modified
tester is designed for use on V-plows with or without
Isolation Module Systems.
1. Remove the six cover screws.
2. Gently lift the cover from the Electrical Tester and
set aside.
3. Drill a 5/16” hole in the tester housing as shown.
4. Remove the retaining nut from the receptacle wire
assembly.
5. Insert the receptacle wire assembly through the
drilled hole.
6. Slide the retaining nut over the ring lug and wire.
Carefully thread the nut onto the receptacle. Do
not overtighten.
PARKING LIGHTS
RIGHT DIRECTIONAL
LEFT DIRECTIONAL
HIGH BEAM
LOW BEAM
VALVE S1
VALVE S6
VALVE S5
VALVE S4
VALVE S3
VALVE S2
VALVE S1
VALVE S6
VALVE S5
VALVE S4
VALVE S3
VALVE S2
GROUND
PLOW VEHICLE
CAB
+12VDC
MOTOR RELAY
LAMPS VALVES
LAMPS
VALVES
Tester
Housing
Drilled Hole Retaining
Nut
Receptacle Wire
Assembly
A DIVISION OF DOUGLAS DYNAMICS, L.L.C.
Instructions for Modifying V-Plow Electrical Tester
for Use with the Isolation Module Electrical System
Lit. No. 26513 2 April 28, 2003
Instructions for Modifying V-Plow Electrical Tester
for Use with the Isolation Module Electrical System
The company reserves the right under its product improvement policy to change construction or design details and furnish equipment when so
altered without reference to illustrations or specifications used.
Printed in USA
7. Connect the red wire from the receptacle
assembly to the red wire found on the terminal
block.
8. Carefully replace the cover and install the six
cover screws. Do not overtighten. Overtightening
may damage the cover.
Follow the instructions in the Electrical Tester
Operator’s Manual for the V-plow with Isolation
Module when using the modified tester.
Back Side of Cover
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Switch
Terminal
Block Red Wire
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