[W126 Coupe] Understanding the EZL

[Dan Gardner]

Hi Folks

    The subject of the EZL often crops up,but I personally dont really fully 
understand its function.I thought it was a resistance device to adjust 
timing,but why on models such as mine (1986 Euro) have a 2 pin connection 
marked EZL on the back of the speedometer and 1987 models onwards  just have 
solder spots where the pins once were?

    Is it sending pulses to the speedometer in conjunction with the 
differential mounter sensor?If anyone has any thoughts I would love to know.

                                                                             
            Kind Regards Dan       1986 560SEC Euro (220kw)