Aftermarket Ultrasonic Backup Alarm Installed




The sensors mount in the plastic of the bumper (see photos.) The only tricky part was making sure that there is no steel structure behind the holes that you drill for the sensors using the hole saw that is included with the kit. The photos show locations which are OK, but check with small pilot holes from upward and under the lip before you drill the real sensor holes to make sure you are in a proper location. I found that I needed to ream out the sensor holes an additional amount to allow the sensors to fully be inserted in the holes. I painted the black sensors with a spray paint that matches the Barolo Red of my 2010 and mounted the control unit in the spare wheel well.
I also later mounted a Curt Hitch and PWM Converter. See a separate post.
Last edited by slk55er; Feb 20, 2012 at 01:20 PM. Reason: additions




Brown: Ground
Blue/Grey: Reverse (used on my ultrasonicn backup alarm)
Black/Red: tail light only bulb
Green: ?? Not sure -- fluctuates with turn signal, but use the Black/White below
Black/White: Left Turn
Pink: PWM tail and brake bulb
On the passenger side the turn signal is Black/Green.
I placed the control unit for it in the spare wheel well as seen in the photo which you can see by going to
https://mbworld.org/forums/glk-class...asier-way.html
Thx,
Denis
Thanks in advance,
Denis




