PROFESSIONAL FOR THIS INSTALLATION. NOTE: AVOID AREAS OF EXCESSIVE HEAT, VIBRATION, PINCH OR ROTATION
WHEN SECURING HARNESS TO VEHICLE. CAUTION: ALWAYS USE A FUSED(+) POSITIVE SUPPLY SOURCE. UNDERCOAT SEAL
FOR HARSH WEATHER.
HINT: Step boards: For Longevity, check rubber seals before installation. Rubber grommets around red and blue wires going
into rear sockets, should be inserted and recessed about 1/4”. NOTE: Remove bulbs and apply white grease into sockets and
replace bulbs. Apply
RTV Silicone where lights go into socket. Install lights and run wire loom as shown. SEE FIGURE 4. For
Sure-Grip Running Boards, run wire loom down center as shown. SEE FIGURE 3.
STEP 7.
Determine whether your vehicle has a positive or negative switching courtesy system or an auxiliary light source (most Fords).
Obtain an accurate wiring diagram for your vehicle's courtesy light system.
For positive and negative switching:
Locate a pass-through point (usually under carpet at driver side door sill) for the wire harness. Locate main courtesy wire
(usually wire lead to dome light). NOTE: If you do not use the main courtesy wire, lights will only function when one door is
open. Route wire harness so that the 2 female connections (from step board) are nearest to pass thru point.*Connect opposite
step board lead to either connection. Connect the splicing lead to remaining female socket and route one wire thru pass thru
point. SEE FIGURE 7.
VERY IMPORTANT - Double check that your system has positive or negative switching.
For positive switching only: Connect positive wire to main courtesy system, (usually wire lead to dome light). TEST CONTINUITY
BEFORE CONNECTING BY OPENING AND CLOSING ALL DOORS. Ground remaining wire.
For negative switching only: Connect negative wire to main courtesy system, (usually wire lead to dome light but sometimes
from dome light to courtesy ECU). TEST GROUND CONTINUITY BEFORE CONNECTING BY OPENING AND CLOSING ALL
DOORS. Connect remaining wire to battery using a 5A fuse.
**Be sure that you have not routed any wires near moving parts (i.e.. driveshaft) or near any heat generating source (i.e..
transmission, engine, exhaust).
Auxiliary Light source:
FINISH PROTECTION
Westin products have a high quality finish that must be cared for like any other exposed finish on the vehicle. Protect the finish with a non-abrasive automotive wax,
(e.g. Pure Carnauba) on a regular basis. The use of any soap, polish or wax that contains an abrasive is detrimental, as the compounds scratch the finish and open it
FOR
WARD
FIGURE 1
INSTALLATION VIEW OF DRIVER SIDE SHOWN, PASSENGER SIDE OPPOSITE
4 5 6
4 5 6
4 5 6
3
2
1
P.N. 75-0810-RevC
ECO# W18-0996
Thank you for choosing Westin products
for additional installation assistance please call
Customer Service (800) 793-7846
www.westinautomotive.com
Westin Automotive Products, Inc.
320 W. Covina Blvd
San Dimas, Ca. 91773
DATE: 12/11/18
