Thanks for info Duke.
Can I buy back light in Autozone to compare timing on idle and 2k.
I'd like to ask you one thing. Just curious. I disconnected vacuum line to EZL module on my old 420sel and it affected idle. You think something was wrong with ignition system on my old car? It doesnt matter anymore since I dont have it anymore. Im asking for my own curiousity since you know theory very well. You never know maybe Ill buy another 420sel.
Thank you
Victor

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod