Have a Mercedes W209 (CLK500) 2003 and I am trying to install a Parrot MKI9200, Parrot's sit says no adapter needed but the wiring doesn't suggest that. Can someone tell me what wire is needed please?

Most CLKs the defective back up light switch is disconnected and removed from the transmission.

Have someone check your driveline universal joints and make sure that the driveline is secured to the differential.

Start with a GOOGLE search for:
"mercedes benz clk500 proper fuel pressure"?

Here is a helpful YOUTUBE:
How To Tell If Your Mercedes Fuel Pump Is Bad Fuel Pressure Test DIY

Here's another YOUTUBE where this guy says he SAVED $400 on his MB fuel pump ~ maybe this will work for you too?

We Put Universal Fuel Pump on Mercedes Restored Fuel Pump on Mercedes W211...

Anthony

Most antennas are located in the windshield or back window... there are booster boxes that boost the signal on its way to your receiver
somtimes they are located hidden in the trunk..and are about the size of a half pack of cigarettes.. see if you can get a schematic to help locate the boosters .

this helped me on my maxima ...but had to destroy factory radio to get look at the back side of mother board .....dont try it..worked for me tho

On this website you find fuse box diagram and description for Mercedes-Benz CLK

https://www.carknowledge.info/mercedes-benz-clk-class-w209-fuse-box-diagram/

https://www.autogenius.info/mercedes-benz-clk-class-w209-fuse-box/

Hello, If you are talking about the suppressor that connects to the spark plug try this. Disconnect suppressor from plug, take a small screwdriver etc. and pry the top part of the boot slightly away from wire, spray some silicone lubricant in between the wire and boot, hold the wire in one hand and the suppressor in the other, unscrew the suppressor from wire, remember, lefty loosy righty tighty.
When installing new one, lube the wire and the suppressor and screw back together until snug. Do not over tighten.
If you find this information to be correct would you please enter a "fixya" rating.
Thanks, Gator241