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Old 28th October 2008
Frogdude Frogdude is offline
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Join Date: Jul 2007                                                
Location: Minnesota
My Saabs: 2002 9-3SE
Posts: 167
Default motronic - shift up light

I wanted to be able to turn off my "shift up" light but I couldn't find this information for the 900S anywhere on the forums, so I thought I'd post it.

On a motronic NG 900S car (N/A), the blue/yellow wire that controls the "shift up" light goes into pin #35 on the ECU. It is easier to access the wire directly behind the glove box (you have to remove the glove box), where it is part of 2 big plugs after which the wires are distributed to different parts of the car. It is still a blue/yellow wire, just like with a trionic, but the position in the ecu plug is different.

I clipped the wire and added a switch. I hate having the light come on, but my wife likes it, so this way we can both be happy.
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Old 28th October 2008
bayern bayern is offline
Senior Member
Join Date: May 2007                                                
Location: TX
My Saabs: 1996 900S 5
Posts: 227

I just took the light bulb out. Simple and a big improvement.
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