Signal Mirror Installation Instructions
Chevy Silverado 1999-2004, Chevy Suburban 2000-2004, Chevy Tahoe 2000-2004, Cadillac Escalade 2002-2004, Cadillac Escalade EXT 2002-2004, GMC Sierra 1999-2004, GMC Yukon XL 2000-2004, GMC Yukon Denali 2001-2004, Chevy Avalanche 2002-2004
For 2003 model year, please go to page 5
THE safety accessory of the 21st Century.
P/N 210-0015-0 Rev. K2 (9-15-03), BTV 2003 Muth Company, LLC.
Note: Professional Installation Recommended
Warranty does not cover damage to the vehicle or mirror housing due to improper installation. The following installation instructions are to be considered as a guide only. Door removal procedures, signal wire color and location may have changed since publication of these instructions. The installer is responsible for any damage that may occur during installation.
INCLUDED ITEMS: 1 left and 1 right Signal Mirror 1 left and 1 right wire harness 2 wire taps 2 ring connectors 1 instruction manual REQUIRED TOOLS: Ratchet with extension or ratcheting screwdriver 10mm socket 7mm socket 8mm socket Small slotted screwdriver Medium Philips screwdriver Needle nose pliers Small pry bar, Heater Gun Gopher wire Electrical tape Wire crimper and stripper Multimeter Sturdy gloves
Please read instructions prior to installation.

PROBLEMS OR QUESTIONS?

Technical Assistance is available by calling Muth Mirror Systems at: 1-800-844-6616 Monday through Friday Between 8:00 a.m. and 5:00 p.m. CST Or through the Muth web site:
www.muthco.com Or via E-mail: techsupport@muthco.com

Mirror Housing Removal

1. Lower window. 2. Unsnap and remove the triangular molding that covers the mirror mounting screws. Unsnap and remove the molding that covers the door handle. 3. Unsnap the control console and unplug the wires. 4. Remove the screw located behind the arm rest. Remove the screw behind the door handle. 5. Dislodge but don't fully remove the door panel by pulling it up and away from the door.
1. Twist and remove the door light and set the door panel aside. 2. Secure mirror with one hand. Proceed cautiously to avoid dropping articles into the door panel. Remove the 3 mirror mounting nuts. 3. Remove mirror from door.

Mirror Replacement

Caution: Safety glasses and sturdy gloves are recommended for the following steps. 1. Place the mirror housing on a clean level surface. Push on the outer edge of the mirror to manually pivot it fully outward so a small pry bar can be inserted under its inner edge. Apply gentle pressure with the pry bar until the mirror backing plate begins to unsnap from the motor. 2. Move the pry bar around the mirror and pry again until the mirror backing plate further unsnaps from the motor.
3. Pull the mirror off of the motor. Some force may be required to free any remaining snaps but it should not be excessive. If you can not remove the mirror without excessive force, apply the pry bar further around its edge to loosen more snaps. Then try again. NOTE: If you have heated mirrors disconnect the wires when you remove the mirror. The polarity for the heaters is reversible so it is not necessary to label the wires.
Mirror Replacement Continues

Rubber Boot

Motor Actuator
1. For both driver and passenger side mirrors, remove the rubber boot around the motor actuator PRIOR to installing the Signal Mirror into the mirror housing. NOTE: Permanent removal of rubber boot, by pulling it over the motor, is required for this application and will not negatively affect operation or durability, per the mirror motor manufacturer. 2. Pull back the rubber insulation on the mirror mounting frame to expose the wire routing passage. 3. Locate the correct Signal Mirror harness (short for driver side and long for passenger side) and slide the end with no connector through the routing passage (from the inside of the mirror housing) and through the hole in the rubber insulation. Leave about 6 inches of slack in the harness near the motor pack.
1. Connect the Signal Mirror leads to the harness. (If you have heated mirrors, connect the wires to the heater terminals at this time.) 2. Place the Signal Mirror over the motor puck.
3. Place the palm of your hand on the center of the glass and press firmly until you hear the snaps engage onto the motor puck. Press on the top, bottom and both sides of the mirror to ensure complete attachment to the motor puck. (Mirror should be pivoted through its full range of travel during this step.)

Mirror Housing Attachment
1. Feed wires into door and set mirror in place. 2. Attach mirror with original 3 nuts. Do not over tighten. 3. Pass Signal Mirror harness through the rubber boot between the door and the vehicle.

Wiring

1. Find the bundle of wires just to the left and below the steering column. You may need to remove a plastic wire sheath. Locate the Light Blue wire. Turn the ignition key so that electrical power is on and activate the driver side turn signal. Probe the Light Blue wire to verify that flashing turn signal power is present. Deactivate the turn signal and depress the brake to make sure you have not located the rear turn wire. Label that wire as front, DRIVER SIDE TURN. 2. Locate the Dark Blue wire and activate the passenger side turn signal. Probe the Dark Blue wire to verify that flashing turn signal power is present. Deactivate the turn signal and depress the brake to make sure you have not located the rear turn wire. Label that wire as front, PASSENGER SIDE TURN. 3. Make sure the harnesses are routed securely under the dash and enough slack is left for splicing. Strip and twist together the ends of the black wires from each harness. Crimp them together in the supplied ring connector and ground to a suitable nearby location on the metal framework of the vehicle.
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Door Panel Removal 2003 model year
1. Remove lock cover by prying with small screwdriver from the outside of cover. 2. Using 7mm socket, remove the (3) bolts first one behind lock cover, second one under door handle, and last one on the bottom of door panel. 3. Pry off cover that goes around door lever.
1. Remove small triangular cover from top of door panel. 2. Lift door panel up and away from door. Disconnect all wiring connections. 3. Using 10mm socket, remove (3) bolts holding the mirror housing to the door. Remove mirror housing from door.
Caution: Safety glasses and sturdy gloves are highly recommended for the following steps. 1. Place the mirror housing on a clean level surface. Push on the outer edge of the mirror to manually pivot it fully outward so a small pry bar can be inserted under its inner edge. Apply gentle pressure with the pry bar until the mirror backing plate begins to unsnap from the motor. Move the pry bar around the mirror and pry again until the mirror backing plate further unsnaps from the motor. Pull the mirror off of the motor. Some force may be required to free any remaining snaps but it should not be excessive. If you can not remove the mirror without excessive force, apply the pry bar further around its edge to loosen more snaps. Then try again. 2. If you have heated mirrors, disconnect the wires when you remove the mirror. The polarity for the heaters is reversible so it is not necessary to label the wires. NOTE: After removing original glass, check to see that the dust/dirt booty is not stuck in motor, and that the outside ring has free movement around.

3. Pull back the rubber insulation on the mirror mounting frame to expose the wire routing passage. Locate the correct Signal Mirror harness (short for driver side and long for passenger side) and slide the end with no connector through the routing passage (from the inside of the mirror housing) and through the hole in the rubber insulation. Leave about 6 inches of slack in the harness near the motor pack. 4. Connect the Signal Mirror leads to the harness. (If you have heated mirrors, connect the wires to the heater terminals at this time.) Place the Signal Mirror over the motor puck. Place the palm of your hand on the center of the glass and press firmly until you hear the snaps engage onto the motor puck. Press on the top, bottom and both sides of the mirror to ensure complete attachment to the motor puck. (Mirror should be pivoted through its full range of travel during this step.)
1. Route Signal Mirror wire harness through hole along OE wire harness.
2. Using 10mm socket, reconnect the (3) bolts holding the mirror

housing to the door.

3. DRIVER SIDE: Probe the Light Blue wire to verify that flashing turn signal power is present. Deactivate the turn signal and depress the brake to make sure you have not located the rear turn wire. Label that wire as front, DRIVER SIDE TURN. PASSENGER SIDE: Probe the Dark Blue wire to verify that flashing turn signal power is present. Deactivate the turn signal and depress the brake to make sure you have not located the rear turn wire. Label that wire as front, PASSENGER SIDE TURN. NOTE: Triple check to ensure you have the correct signal wire, as there are several of them to check from.
1. Make sure the harnesses are routed securely and enough slack is left for splicing. Split and cut the Signal Mirror harness to length. 2. Strip the black wire and crimp on yellow grounding ring. Using a 10mm socket wrench, remove the bolt by the speaker. Attach the grounding ring to the bolt and tighten the bolt in place.

Wiring Contunues

USE THE INCLUDED WIRE TAPS AND FOLLOW THE FOUR STEPS ABOVE TO SPLICE INTO THE TURN SIGNAL WIRES 1. 2. 3. 4. Splice the RED wire from the driver side harness into the Light Blue wire previously labeled driver side turn. Splice the RED wire from the passenger side harness into the Dark Blue wire previously labeled passenger side turn. Activate each turn signal to verify that the Signal Mirrors are working. Replace any door accessories, door panels, plastic moldings, and trim pieces.