Dancing gauges are hit and miss. Norm and Zippy don't, but Ol' Turbo does after a long trip. I don't think it has much to do with anything maint, but at some point the gauge changed from direct to computerized. Could be the W124 has that upgrade, but I'm not sure.

I'm pretty sure all 3 have delay interior lighting and standing lights (if you mean the amber side lights are on with the headlights.)

__________________
1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

Whoops... The 500SL's lights don't delay.

__________________
1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

The gauge has danced in pretty much every W123 I've ever owned at one time or another....

__________________
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