So far that is good info, and at least helps in starting to understanding this weird one year only circuit. When and if I actually get home this week before dark I am going to pull the one on the bell housing. There is still some crud on that one. Does it just "pull" off (doubtful), or does it have some sort of securing bolt or bracket?
OK, the vehicle speed sensor behind the speedo..... is that tied in to the cruise operation? I also saw an electrical wire/plug on the back of the tranny. Is that tied into said vehicle speed sensor?
I've swapped EGR control unit. Old one was heavily oxidized, green pins and all. Didn't fix it to my suprise and dismay. They hide that thing well, don't they? As stated in post #4, Overload Protection Relay fuse is good. Took relay apart, and all seemed well.
I would love a working tach, and I'll get there some day.......

**edit**
I was typing same time as post above this one, and didn't see it until after I typed the above.....

__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John