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Old 12-06-2003, 06:49 AM
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Join Date: Dec 2003
Posts: 1
Speed pulse on Mercedes A-Class??

Hi all,

Have fitted a sat/nav system to my 1999 A170 CDI.

Having connected the speed pulse wire to the purple/green wire from the wiring loom, the system is still not accurate, in fact the speed judging is terrible, and the system is pretty useless like this.

I have been led to understand that I have done 2 possible things wrong:

1) Connected the speed pulse wire to the wrong line.
2) The pulse signal is CAMBUS at that position, which is incompatiable with my system.

Please help if you can. If the fault is (2) then where can i connect to a standard pulse (non-cambus).

Your help would be greatly appreciated.

07732 882525
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