Bongo Fury

can anyone point me to any posts dealing with fitting a chip to the speedo please ?
the garage that did the mot etc reckon the chip is faulty or there is a bad earth,unfortunately i am in norfolk and they are in bristol.
i have the new chip but i ain't got a clue where to start.the last motor i worked on was a 1967 ford anglia lol.
i'll be most grateful for any help i can get thanks
1998 sgl5 tdi gorleston near (not in) great yarmouth

easy
4 screws in surround and the dash comes out

here is a link to a 626 speedo change but the removal is the same

pics on page 1
http://www.igmaynard.co.uk/bongo/forum/ ... it=top+tip
once unscrewed pull the plugs out the back the chip is screwed to the rear of the cluster and connected to a wire from the loom

i can see i'm gonna like it here thanks people.
Unfortunately I had a cataract removed on Monday so wont be able to attack the job for a couple of days.But when I do at least I'll be able to see what I'm doing. lol

any problems (which you should not get) shout someone will be here to offer advice

some of it may even be useful

also I know your in Norfolk but it helps to put your location in your profile for future help