The cruise has nothing to do with the regular operation of the car. Lots of people just remove them when they go haywire rather than pay to fix it. If you do much highway driving though, it's graet to have a working cruise system. I also had GDL rebuild mine (both of them) and second the recommendation. Regardless I suggest you check their website for some troubleshooting procedures before you start soldering.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold