So, I am getting a 1994 E420 from my in-laws. It's in sweet condition, but I *GOTTA* have keyless entry. After driving cars for the last 10 years that had keyless entry, using the key to open/close a door is requiring a painful reconfiguration of my neural pathways and honestly I don't want to waste a re-mapping just on this...

I've read this thread and another thread on BenzWorld and while I have no doubt I can do the install, I'm concerned about the discrepancies in what works and what doesn't, etc.

Has anyone installed a keyless remote in a 1994 E420 and can you share your exact instructions? I also would love brand recommendations, etc. I know the Crutchfield system is $70 or so, I'd be willing to spend more if I got more things like closing of windows/sunroof on lock and opening of windows/sunroof on unlock with certain button presses, etc. I'm also not 100% sure if the E420 comes with an alarm...Is that a stardard thing? If it doesn't I'd probably consider getting an alarm system. I also would like to have the lights flash when it is unlocked or locked.

Lastly...How long does the install take? If it's going to take me more than 3 horus I'll probably just pay to have it installed...

Thanks.

Thanks.