Direct wire GPS mount + EZPass holder for Benz C240

Picture of Direct wire GPS mount + EZPass holder for Benz C240
Last one for the Toyota was too easy & not enough pics. This time I draw inspirations from Apple !

Materials needed:

- 4" x 12" Balsa ply wood
- 5/8" wooden ball
- 1/2" wooden dowel
- Black spray paint
- Cig light socket
- 5' thin gauge wire

Total cost ~ $10
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Step 1: Looks like a iMac G4 ?

Picture of Looks like a iMac G4 ?
Can't tap into dome light this time. Benz has rain & light sensors near the mirrors, can't risk it.
So dash mount this time.

Step 2: Build the mount/holder

Picture of Build the mount/holder
Cut sheets into box dimension of EZPass tag. Dowel should be glue + nail/screw in. Glue & clamp down to dry

Also spray painted black to match interior.

Step 3: Tap into lighter socket

Picture of Tap into lighter socket
How to tap into light socket here ? Lots of removals needed !!

Start with the bottom rubber cup holder. Use a small screw driver, push open the edge of the rubber cup holder. Slip in a needle nose pliers & pull it out.

Step 4: Cup holder removal

Picture of Cup holder removal
Be firm but gentle here. This is an expensive part !!

Eject the cup holder. Hold the cup stem, pull up a bit, then rotate clock-wise. It'll come out, trust me ...

Step 5: Remove shifter console

Picture of Remove shifter console
Open ash tray door. Grab the top left & left edge of wood insert & pull up; then remove the leather shift boot.

Step 6: Remove ash tray

Picture of Remove ash tray
Yet another expensive part !

Open the door, insert small screw driver to the 2 bottom tabs & push back to unlock. Pull the ash tray out

Step 7: Tap into lighter harness

Picture of Tap into lighter harness
Push up to unlock the 2 tabs. Finally, the lighter mount can be swing back.

You don't need to disconnect the car battery, just be sure key removed !!

Grab the L-shape lighter connector with needle nose pliers, pull right to remove.
Open the connector & tap wires in.

Black/yellow is HOT
Blown is ground

Close connector & reconnect to light socket.

Step 8: Run power line

Picture of Run power line
I picked the arm rest console to stash the charger ...
Quickest way is to run power wire outside, then back in.
automd5 years ago
Very nice instructable! The position is just right. Not too near and not too far either. I saw some gps installations that are pretty much on the wrong location on the dash.
wongman2001 (author)  automd4 years ago
I've since moved it to left hand side, just behind the NY State stickers. Ran the USB wires under behind the console & thru the A pillar.

Even less intrusive now :)