drivers behind the towed vehicle will not be alerted when

drivers behind the towed vehicle will not be alerted when
LED bulb and socket kit
part number 152-LED
Time Tested • Time Proven
855525-00
Installation Instructions
All specifications are subject to change without notice.
03.16
ROADMASTER, Inc. • 6110 N.E. 127th Ave. • Vancouver, WA 98682 • 800-669-9690 • Fax 360-735-9300 • roadmasterinc.com
drivers behind the towed vehicle will not be alerted when
the motorhome stops, which may cause a collision.
Read all instructions before installing the kit components. Failure to understand how to properly install the kit
could result in property damage, personal injury or even death.
3. Drill one-inch circular holes through the back of the
taillight housings at the mounting points you have selected.
The holes must be circular, in order to hold the sockets
in place. A hole saw works best, but the shape and location
of some taillights may require a rotary cutting tool.
Required Tools
• 1" hole saw or rotary cutting tool
• drill
• wire stripper • wire crimper • test light
Be certain not to cut into any wires or other components. Severe electrical damage or injury may result.
Parts List
• a 27-foot four-wire electrical harness
• (2) LED and socket assemblies • (1) ring terminal
• (3) yellow butt connectors and (3) blue butt connectors
• (1) self-tapping screw • (13) wire ties
• three feet of ½" split loom
Installation Instructions
1. The LED sockets are installed into the back of both taillight assemblies. Gaining access to the taillights varies from
vehicle to vehicle, but for many vehicles you can accomplish
this by removing an interior trim panel; for many pickup trucks
and SUVs you must unbolt the taillight from the outside.
2. Look for a location to mount the LED sockets inside
the taillight housings. The mounting point should be as flat
as possible and must meet the following conditions: 1) the
LED sockets must be installed underneath red lenses; and
2) there must be adequate clearance between the bulbs and
the lenses.
Install the LED bulb sockets underneath red lenses.
If the sockets are installed under amber or clear lenses,
4. Bend the spring-loaded tabs that encircle the sockets
outward slightly, then snap the bulb sockets into the holes.
If the tabs are not bent, road vibrations will cause the
sockets to fall out of the holes. For this reason, make certain
the sockets are securely attached before continuing.
Note: if one of the holes is not completely circular, bend
one or more of the tabs farther to accommodate the shape
of the hole.
5. Use one of the included wire ties to attach one end of
the 27-foot electrical harness at the front of the vehicle.
Note: the harness must be routed through the rear of
the vehicle on the opposite side of the exhaust system. It
may be more efficient to attach the wire on that side as well.
6. Run the harness from the front of the vehicle back to
the taillights.
Route the harness to avoid moving parts, sharp
edges, the fuel lines or hot components such as the
engine or exhaust system.
Wiring exposed by moving parts, sharp edges or hot
continued on next page
IMPORTANT NOTICE!
Safety Definitions
These instructions contain information that is very important to know and understand. This information is provided for
safety and to prevent equipment problems. To help recognize this information, observe the following symbols:
CAUTION
WARNING indicates a potentially hazardous situation which, if not avoided, could result in property
damage, serious personal injury or even death.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in property damage, or minor or moderate personal injury.
NOTE
Refers to important information and is placed in italic
type. It is recommended that you take special notice of
these items.
continued from preceding page
components may cause a short circuit, which can result
in damage to the vehicle's electrical system as well as
other, consequential damage.
Wiring which is attached in close proximity to the fuel
lines may ignite the fuel.
Use one or more of the included wire ties to secure the
harness in place. Where sharp edges cannot be avoided, use
a section of the included wire loom to protect the wiring.
7. At the rear of the vehicle, route the harness to whichever
taillight is on the opposite side of the exhaust system, then
across to the other taillight. If it is necessary to drill a hole to
route the harness to the taillights, seal the hole with silicone
sealant after you have run the harness through.
Trim any excess wiring. Then separate the bonded wires
in the harness and, depending on the lighting systems in both
vehicles, peel back the appropriate wire to the other side.
8. Use the included butt connectors to attach the electrical harness to the taillights. Figure 1 is ROADMASTER's
recommended wiring schematic.
Note: use the larger yellow connectors for two-wire
connections; use the smaller blue connectors for single-wire
connections.
Note: the wiring schematic applies to the majority of
vehicles. However, applications vary. Before wiring, refer to
the owner's manual, or ask the dealership for vehicle-specific
information. (Wiring information for many vehicles is available
at www.roadmasterinc.com, under ‘Vehicle-Specific Info.')
9. Use the included ring terminal and the self-tapping screw
to ground the towed vehicle, as shown in the schematic.
To avoid grounding problems, attach the wire to any
good chassis ground, preferably directly to the frame.
CAUTION
Failure to establish a good ground between the
towed vehicle and motorhome could cause aftermarket
accessories to malfunction, damage to both vehicle's
electrical systems, and other consequential damage.
10. Test for proper operation before reinstalling the taillight
assemblies.
11. It is the owner's responsibility to check the lights for
proper operation each time before towing. Do not tow the
vehicle if the lighting system is not functioning properly.
Figure 1
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