You need to do a few things.

1) a new grommet for the antenna hole
2) use the old antenna bracket for the w201
3) Cut the connector from the old and fabricate a new one for the w201 as the wiring signal is different.
4) I will post the wiring this weekend when I have time.

Good luck.

Army,

BTW: I still have the old unit. It was working until one of the plastic gear broke inside. I pulled the gear from a JY with the intention of fixing it. The mask is no good so you need a new mask. You can have it for FREE just reimburse me shipping. Otherwise it goes to the recycling bin. PM me if you want to have it.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.