here are the instructions
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 Document Outline Pages 1--2 from 13007:SSF-2150 Headlight Flasher Page 1  2 
©1995 Whelen Engineering Company. Form N o. 13007A 008-S (053095) 
Model SSF-2150 Headlight High Beam Flasher 
INSTRUCTIONS MODEL SSF-2150 VEHICULAR HEADLIGHT FLASHER. 
NOTE: The use of a flashing headlight system may be regulated by state, 
county, or municipal authorities. It is the responsibility of the end user to comply with 
these regulations. 
NOTICE: The installation of a headlight flasher system requires a modification to the standard headlight wiring 
harness. This modification may effect the warranty of your vehicle. It is the responsibility of the end user to 
verify the warranty conditions with the vehicle manufacturer. Also, the use of a headligh t fl asher may 
shorten the high beam bulb li fe. 
IMPORTANT NOTE: BEFORE ATTEMPTING THE INSTALLATION OF THE SSF-2150 HEADLIGHT 
FLASHER, THOROUGHLY READ AND UNDERSTAND INSTRUCTIONS AND STEPS SHOWN BELOW!!! 
WARNING... DISCONNECT THE BATTERY FROM ELECTRICAL SYSTEM BEFORE ATTEMPTING ANY 
PART OF THIS INSTALLATION!!! 
WARNING... All customer supplied wires that connect to the positive terminal of the battery must 
be sized to supply at least 125% of the maximum operating current, and fused at the battery to carry 
that load. 
1. Mount the SSF-2150 in the engine compartment near the battery and headlights. DO NOT mount the unit 
directly on the engine or close to exhaust system. 
2. Locate the wire that connects your high beam head-lights to the vehicle high beam control switch (dimmer 
switch) and cut it. Connect the WHITE wire from the SSF-2150 to the end of the high beam headlight switch which 
has j ust been cut . Connect the BLUE wire from the SSF-2150 to the end of the driver side headlight wire. (see 
wiring diagram). 
3. Locate the wire that connects the passenger side high beam to the driver side high beam and cut it. Be sure to 
cap or insulate the driver side end of this wire before proceeding. Connect the YELLOW wire from the SSF-2150 
to the end of the cut wire from the passenger side high beam headlight (see wiring diagram). 
4. BLACK WIRE, GROUND (–) to be connected to a good chassis ground. 
5. BROWN WIRE, NIGHTTIME CUTOFF FEATURE. If flashing headlights ARE ALLOWED during nighttime 
operation, connect the brown wire to a good chassis ground. If flashing headlights ARE NOT ALLOWED 
during nighttime operation, connect the brown wire to the positive (+) 12 vol t D. C. wire which is connected to the 
vehicle's parking lights. Do not cut the parking light wire, merely "tap" into the circuit. 
6. ORANGE WIRE, FLASHER ON/ OFF CONTROL. Connect the orange wire to a customer supplied ON/ OFF 
switch rated for at least 200ma. The switch must be connected to positive (+) 12 volt D. C.. 
7. RED WIRE, POWER SOURCE. Connect the red wire to a high current positive (+) 12 vol t D. C. power source. 
Fuse this wire with a customer supplied 15 amp fuse as close as possible to the power source. 
8. Check all wiring for good connections. MAKE SURE THE CONTROL SWITCH IS IN THE OFF POSITION. 
Reconnect the vehicle's battery to the electrical system. 
OPERATION. OPERATION-Turn the headlight flasher control switch to 
the ON position. The high beam headlights will alternately flash. If the vehicle's high beam control switch is 
activated, the high beams will steady burn. When the vehicl e's high beam control switch (dimmer switch) is 
restored to low beam operation, the high beam headlights will resume flashing. 
NIGHTTIME CUTOUT OPERATION-When the nighttime cutout feature is used, the SSF-2150 Headlight Fl asher is 
non-operational whenever the vehicle's headlight switch is used. 
SEE PAGE 2 FOR WIRING DIAGRAMS 
Pioneering Safety Signal Technology Since 1953 
ENGINEERING COMPANY 
ROUTE 145, WINTHROP ROAD CHESTER, CONNECTICUT 06412-0684 
TELEPHONE: (860) 526-9504 FAX: (860) 526-4078 1 
 1  Page 2 SSF-2150 Headlight 
Flasher 
LOW 
BEAM 
SWITCH 
(+) 
HIGH 
BEAM 
SWITCH 
(+) 
FLASH 
CONTROL 
GROUND(-) 
NIGHT 
TIMECUTOFF 
TO 
12 
VDC 
BATTERY 
(+) 
ORANGE 
WHITE 
BLUE 
LOW HIGH 
RED 
BROWN 
BLACK 
HIGH LOW 
CUT 
HERE 
(STEP 
3) 
CUT HERE (STEP 2) 
SSF-2150 Headlight 
Flasher 
LOW 
BEAM 
SWITCH 
(+) 
HIGH 
BEAM 
SWITCH 
(+) 
FLASH 
CONTROL 
YELLOW 
GROUND(-) 
NIGHT 
TIMECUTOFF 
TO 
12 
VDC 
BATTERY 
(+) 
ORANGE 
WHITE 
BLUE 
CUT HERE (STEP 2) 
CUT 
HERE 
(STEP 
3) 
RED 
HIGH HIGH LOW LOW HIGH HIGH 
BROWN 
BLACK 
DRIVER SIDE HEADLIGHTS PASSENGER SIDE 
HEADLIGHTS 
VEHICLE WIRING HARNESS 
CUSTOMER SUPPLIED 15 AMP F USE TO BE 
LOCATED WITHIN 2 (TWO)FEET OF VEHICLE 
BATTERY. 
CAP OR 
INSULATE WIRE END 
CUSTOMER SUPPLIED 15 AMP FUSE TO BE 
LOCATED WITHIN 2 (TWO) FEET OF VEHICLE 
BATTERY. 
4 LAMP INSTALLATION 
2 LAMP AND EUROPEAN INSTALLATION 
VEHICLE WIRING HARNESS 
PASSENGER SIDE HEADLIGHTS 
DRIVER SIDE HEADLIGHTS CAP OR INSULATE 
WIRE END 
WIRING DIAGRAMS FOR THE SSF-2150 HEADLIGHT FLASHER 2  Page Navigation Panel  1  2