QUOTE(Tech @ Nov 27 2004, 11:06 PM)If you don't have the whole cluster the red/white wire it the tach lead for the tach.
I'd appreciate help on this topic too. I would like to replace the std clock on a 1988 240DL with a tachometer from a 1986 240GL. From your post it looks like you can swap instrument clusters but I'd like to keep the original speedo (the '86 GL odometer has 240,000 miles on it!). What would be easiest: Putting the GL tacho in the original DL cluster or putting the original DL speedo in the GL cluster?
Does the DL and GL cluster have the same wiring?
Is the red/white wire attached to the large tacho or is it used only for a separate 52 mm unit?