0019-0015 Installation Instructions SunSpot 36-4313_4314 Rev IR Page 5 of 9
Wire Sizes
Reference:
AC43.13-1B, Chapter 11, §4 and §5
for appropriate wire sizing and fuse/breaker protection
Removal
Prepare the aircraft for maintenance: Make sure all switches are in the OFF/NORMAL position, attach
maintenance warning tags, pull landing/taxi light circuit breakers.
Reference airframe
manufacturer’s current maintenance manual to remove any light covers to gain
access to lamp assembly(s) and bracket(s).
Disconnect connection to positive aircraft power.
Disconnect ground from aircraft power.
Remove existing lamp(s) from brackets, mark and retain hardware.
Record weight of removed lamps.
Installation
Reference airframe manufacturer’s current maintenance manual and install LED light(s) in brackets
using retained hardware.
Install suitable aircraft approved connecters to wires coming from landing light assemblies and wires
routed from switch using appropriate wiring diagram to the number of lights shown on pages 7-9.
Note
that the non pulsing version only has screw terminals for #6 ring terminals and does not support the
pulse function. The screw terminals are not polarized, so the power and ground can be connected to
them in either order. The positive wire for powering the pulse mode is connected to the yellow wire.
Follow the wiring diagrams for connecting the blue and green synchronization wires for two and four
light installations.
If necessary, install an appropriate aircraft approved switch and circuit breaker of correct rating for the
lights installed for the pulse function. Original landing light switch/switches may be used.
Placard switches appropriately.
Power up aircraft and verify proper operation of LED light(s), in both pulsing and steady functions (as
appropriate to the installation)
Using the appropriate aircraft maintenance manual, verify that the light angle has not changed, and is
oriented & aimed in accordance with manufacturer’s instructions.
Perform EMI test to verify there is no interference caused by light installation.
Reinstall any light covers removed to gain access to lamp assemblies and brackets.
Enter appropriate logbook entry detailing work, and if necessary fill out and submit appropriate form
337 for work accomplished.
Perform an operational check of the landing/taxi light(s) in accordance with
14CFR, §91.407 (b) (c)
to
determine that the installed landing/taxi light(s) provide enough light for night operations in accordance
with
14CFR, §23.1383
.
Weight & balance change from standard position light assemblies to LED landing light assemblies is
considered negligible.
Troubleshooting
Check for bus voltage at power input wire to the light, reestablish power if inadequate power is found.
Check for excessive resistance at light ground and repair if necessary. Remove and bench check light if
wiring is verified good.
