I've poked around for a while but can't find the information I need to solve this problem - I bypassed the Klima relay on my dad's 350sdl a while back, which works fantastic, but it removes the transmission kickdown function.

I can't find a pinout chart that will show me what I need to wire together to give power back to the kickdown switch/solenoid. I assume it's as easy as connecting two of the pinouts on the car together- maybe I'm missing something.

Does anyone have the chart for a '91 350sdl or has anyone made this work before?

Looks like you need to send power down to pin 6. That should restore kick down functionality.

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