240D does not have a junction box as I recall. There's a 50/50 chance she'll get the correct terminal. If it doesn't spin, go to the other terminal. The big terminal is + 12, if you connect the remote starter across the small and big terminal of the starter solenoid, there's no chance of shorting (if wrong batt terminal connection was made).

As I recall, the 240D has a lot more room than the 300D for glow plug compression testing. Removing the injector lines is not really necessary unless you have huge hands. #4 will be the hardest one with the IP in the way.

You can wire the stop lever shut but use a heavy duty bungee on the wire and hook it on the hood hinge. Wire alone has too much slop for complete fuel shut off.

I'd suggest doing both a cold and hot tests. More work but will provide more data. The cold test will be good practice for getting the glow plugs out fast for the hot test.

Have fun!

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked