Star Headlight & Lantern FlasherModule with Switch User Manual

Model #FM3666

Mechanical

Headlight Flasher

(1.2 FPS)

REV. E 4/27/04 PLITSTR124

The FM3666 headlight flasher is designed to work on both two and four

flas

h to gain attention and to increase the vehicle’s visibility.

headlight systems on any vehicle with a 12 VDC negative ground system. If the
vehicle you are installing this unit on has Daytime Running Lights (DRL’s), you must
order Model #FM3669C. Please use Model #FM3669 if you would like a headlight flasher
which also adds a DRL function to your vehicle.

A properly installed FM3666 headlight flasher will flash the vehicles high beam lights (up
to 70 watts per side) in an alternating pattern at 1.2 FPS. When used at night, the low
beam lights will remain ON for proper illumination of the road, while the high beams will

Installation Instructions

WARNING: DISCONNECT BATTERY BEFORE BEGINNING INSTALLATION !!!

CAUTION: This flasher unit is designed for use on high

beam headlights rated at a maximum of 70 watts
each.

1. Mount the supplied headlight flasher unit in the desired location using the two screws
supplied or an alternative method.

2. The current wiring of your headlights, high and low beams, should resemble the wiring
diagram in Figure 1.

3. The electrical connection in the circled area indicated by the arrow in Figure 1 should be
broken. Disconnect the wire running from your high beam switch to your high beam
headlights and also disconnect any power wires connecting the two high beam head
lights to one another.

4. Connect the wire running from your high beam switch, which was originally connected to
the headlight wires, to the orange wire from the FM3666 flasher unit as shown in Figure

2.

5. Connect one red wire from the flasher unit to the wire from one of the high-beam
headlights and connect the other red wire to the other high beam headlight as shown in
Figure 2.

6. Connect the black fused wire from the flasher to a +12 VDC power source that is
capable of delivering at least 15 amps.

7. When properly connected, the switch should flash your high beams when flipped to the
‘ON’ position, regardless if your high beam switch is on or not.

8. When the switch on the flasher unit is in the ‘OFF’ position, your high beam switch should
function normally.

9. On vehicles with headlights that are both high and low beams, the wiring should be the
same except for the fact that the high beam wires will run to the same light as the low
beam wires, utilizing additional contacts on the back of the lamp.

If you have any questions concerning this or any other Star product,

please contact our Customer Service Department at [phone].

If a product must be returned for any reason, please contact our Customer Service Department

to obtain a Returned Goods Authorization number (RGA #) before you ship the product to Star.

Please write the RGA # clearly on the package near the mailing label.

REV. E 4/27/04 PLITSTR124