391-53973/A LED Conversion Kit
For L679 & L914 Taillights
Motor fearlessly after dark!
Would you like to never worry
about having your life depend on a single vulnerable light filament?
Would you like brighter taillight and brake light illumination so you can be
much more visible on a dark and rainy night.
Avoid the possibility of becoming
the hood ornament on a Mack Truck! Replace the original weak tail/brake light
bulb with a USA made LED conversion kit designed to fit your taillight, and
provide bright visibility without danger of burnout due to vibration or age. Not
just an LED bulb, these kits consist of a printed circuit board with multiple
Light Emitting Diodes fitted and includes complete installation instructions to
upgrade your old light to 21st Century specifications.
The 391-53973/A is the only LED Taillight Conversion Kit on the market
specifically designed for your Brit Bike made from 1966-78 with Positive Earth
or 1979-83 with Negative Ground. The uniquely shaped LED Board will fit both the
popular 391- 53973 (L679) or 391-56513 (L914) Lucas style taillights for a
simple "Plug and Play" conversion. Some assembly required.
· Designed for optimum
installation in reproduction "Lucas Style" taillight assemblies.
· "Automatic Polarity Circuit" for use with either Positive Earth, Negative
Ground, or Energy Tranfer Systems (A.C.).
· 4 White LEDs for the lighting of the license plate.
· Screw-type terminal block for ease of wire connections.
· Mounting holes and hardware are also ground connections.
· Surface-Mounted components on the back-side of the board.
· Transient Voltage Suppression to control voltage spikes.
· Clearance slot to access bottom mounting screw.
· Draws only .13 Amps (Low) & .65 Amps (High) @ 12 Volts.
Each kit contains the following items:
· Fully illustrated step-by-step installation instructions for both 391-53973
(L679) & 391-56513 (L914) taillights.
· Ultra-bright LED Board designed to operate in low and high intensities using
the same LEDs.
· 12" (16 AWG) Wire Set with 4.5mm "Bullet" connectors pre-installed, compatible
with most "Lucas" harnesses.
· Corrosion resistance stainless steel and nylon mounting hardware.
· Installation takes only 30 minutes or less!!
LED Board Dimensions:
· 4.04" x 2.80" (103mm x 71mm) Approximately
· .063" Thick (1.6mm)
Fits Most Of British Made Motorcycles Made From 1966-1983: Triumph, BSA, Norton, Royal Enfield, Matchless, AJS, and etc.
Instructions for 391-53973 (L679) LED Installation (pdf)
Instructions for 391-56513 (L914) LED Installation (pdf)
Important Product Advisory for 391-53973/A - Additional Instructions (pdf)