Westin Automotive Products, Inc. • Irwindale, CA • (800) 345-8476 • Fax (626) 338-1630
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STEP 5:
Repeat the installation steps for the other side to complete the install.
INSTALLING THE LIGHTS & WIRING HARNESS TO YOUR STEP BOARDS (FOR LIGHTED VERSION):
STEP 5
: A three piece wiring harness is included with the Lighted Step Board. The harness includes four
(4) light sockets and three plugs. Carefully plan a wire route from the right side Step Board to the left.
Then choose a pass-through point (floor board to inner cab) for the wire harness. WESTIN RECOMENDS
YOU USE A PROFESSIONAL TO INSTALL THE WIRING HARNESS—SEE STEPS 12-17 BELOW.
STEP 7
: Attach wire harness and lights. Be sure all rubber seals are in place before installation. The
rubber grommets around the red and blue wires going into rear of sockets should be completely inserted
and recessed about 1/4”.
NOTE: Ensure the longevity of your lights by removing the bulb and placing
a small amount of white grease into the sockets and replacing the bulb. Place a small amount of
RTV Silicone where the lights go into the socket. This keeps the sockets dry and adds to longevity.
Screw lights into sockets and run conduit in center slot of aluminum base board. This will hold the
harness in place.
STEP 8:
Mount board to Brackets. Mount “Trim Seal Gasket”, part #27-9901 (sold seperately) to cover the
space between Step Board and body panel.
STEP 9:
Tighten 5/16” Nylocks with washers.
STEP 10:
Repeat process for driver side less the “Z” support straps.
STEP 11:
Tighten all the remaining hardware and test the Step Boards for attachment. This concludes the
installation procedure for the Step Boards without lights. For the Lighted version, proceed to STEP 12.
STEP 12: GENERAL TIPS FOR WIRING HARNESS INSTALLATION. PLEASE NOTE: The light wiring
harness installation requires splicing into your vehicle’s electrical system. WESTIN HIGHLY
RECOMMENDS THAT YOU USE A PROFESSIONAL TO INSTALL THE WIRING HARNESS FOR THE
LIGHTED VERSION.
STEP 13
: After choosing a a pass through point follow this sequence: CAUTION: ALWAYS US A FUSED
(+) POSITIVE SUPPLY SOURCE AND UNDERCOAT SEAL FOR HARSH WEATHER. Route long lead harness
to short lead harness and plug connectors securely. Note: Avoid areas of excess heat, vibration, pinch or
rotation when securing harness to vehicle.
STEP 14
: Plug open-ended connection into unused connection. Note: Either connector on short lead
board harness will work. Route open ended wire harness through truck cab. Note: Find the closest
position to door light switch lead wire. Pass seal through hole. Use silicone or permanent sealer.
STEP 15
: Connect positive and negative lead wires to vehicle sources (dome light or courtesy light under
dash). Use vehicle door switch for ground lead source and appropriate positive lead for supply. ALWAYS
USE A FUSED POSITIVE (+) POWER SOURCE.
STEP 16
: Test circuit for proper function and connection before tape sealing all exposed wire.
STEP 17
: Under-coat the Step Boards, Brackets and all electrical wires, connections and lenses for harsh
weather conditions. INSTALLATION IS COMPLETE.
THANK YOU FOR CHOOSING WESTIN!
