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Discussion Starter · #1 ·
Can anyone tell me how cruise control on a Vectra 1.8 GLS (X18XE1) actually works? :think

I understand the functions of the separate parts that form the system but I'm struggling to work out where the speed signal comes from.

On my dads old Carlton (I loved that car) there was a rev sensor on the output shaft that monitored the rpm but i can't figure out where the Vectra's control unit gets it's information from.

I'm planning on fitting cruise control to my Vectra some time soon but I want to get a good understanding of how it works before I install it.
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