SLK Navigation System Installation

The following is detailed instructions for installing an Alpine Navigation system in an SLK.

This installation requires special tools and requires tapping into the electrical system of the SLK.

Perform this procedure at your own risk. If you are not comfortable with this type of work,

please use a professional installer. SLK32.com and the author cannot be responsible for your actions.

Note:click on pictures to enlarge.

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Step 1: Remove the cup holder tray. Click here for instructions.

Step 2: Disassemble the cup holder by removing the bottom rear panel. It is snapped into place. You can unsnap it by inserting a wide screwdriver and twisting. The cup holder internal parts can now be removed.

Step 3: Unscrew the front cover. There are two screws

Step 4: Gently peel off the vinyl covering on the front cover.

Step 5: Using the width of the screen as a guide mark plastic front cover as shown. I recommend a dremel.

Step 6: The area shown needs to me ground out. A dremel is recommended.

Step 7: Once the cutting is complete, the vinyl needs to be replaced. Trim the vinyl to fit the new shape and use a glue gun to reattach the material. Reattach the front cover to the cup holder tray. The final assembly should look like the pictures to the left.

Step 8: Fit the screen in the modified cup holder. Make sure to test fit with the bracket bolt attached to ensure that it fits passively. Adjust the cup holder with a dremel as needed.

Step 9: Fabricate a bracket that will sit flat in the coin holder portion of the cup holder. It should appear similar to the picture on the left.

Step 10: Remove the glove compartment. Click here for instructions.

Step 11: Run the wire for the screen through the opening of the cup holder. Connect the wire to the screen. Using a glue gun, glue the bracket into place as shown. Then install the screen in the cup holder slot.

Step 12: Mark of the panel from under the glove box for mounting of the navigation unit. Use the provided brackets to mount the unit. Also make appropriate slots for the wiring.

Step 13: Attach and run the wire for the antenna. Make sure it has a free view of the sky.

Step 14: Wire the unit as instructed. For access to the reverse light power uncover the large wire bundle under the passenger's mat. The wire is Grey with a yellow stripe. Other wiring noted below.

Wiring: main color/strip color/cross stripe color At radio: Pink/Yellow/Green = acc power 12 volt Grey/Blue = illumination Green/White = speed sensor Red/Green = constant 12 volt On passenger floor: Grey/Yellow = reverse lights I recommend you ground the wire for the hand brake. Otherwise you need to pull up the brake to use most features on the navigation unit.

Step 15: Cut out the styrofoam piece in the passenger foot area to accommodate the screen junction box. Velco it to the metal plate.

Step 16: Verify that the Nav unit can go into its proper position and adjust/cut to fit as needed. Make sure to connect all the navi connections at this point.

Step 17: Re-install the glove box and related panels and install the black panel with the navi unit.