Would you consider getting yours back (if possible) and send it to me for repair? If yours is intact, along with the one I'm working on, and I can draw a schematic from them, and there are no proprietary components like an i.c. there is a good chance these things can be repaired or a new circuit built to replace it.

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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