MB went from specifically formatted control units particular to each car, to universal control units that had programming resistors for variant identification. Now they are back to programmed control units.

It's my guess that if the part is good it will work after a fashion. The reason they redesigned the fool thing so many times was the controllers had many problems. An 86 would be an early version, likely to have the most of those problems.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician