The assembly is getting power. All the bulbs and fiberoptics are lighting up. I think the original unit is fried. Can I use the new 14pin unit without damaging it or the wiring on the car.

Where can i find the vacuum supply to the CCU. I don't have a book for this vehicle. I have a 123 manual so I have just been winging it or finding info on this site. The wHunter DIY thread was useful but I am having trouble diagnosing the real problem. I don't think I need to pop the casing open or do any soldering, at least I hope not.

Thanks

__________________
1985 300sd Burgandy - Palomino. This ones a keeper.
1986 Isuzu Trooper II Turbo Diesel 5 Speed Red/Grey.
1995 Mustang GT 5.0 5 Speed Black/Gold.
----------
1985 300sd Silver - Blue/Grey Custom. Sold!
1984 300sd Green - Black/Green MB Tex. Sold!
1991 Volkswagen Jetta ECOdiesel 5 Speed White/Grey. Sold!
1995 F150 5.0 Auto Green/Gray. Sold!