Ok chaps pictured below is the radio suppressor
Bosch part no. 0 119 910 002 - ford no. 86GB17K499AA

At the INLET wire to this is 12.15 - 12.30 ish Volts reading on multimeter...

On the outlet of suppressor going to the wiring loom which ends up at Speed Sensing Module is 1.60 Volts

Is this normal procedure to take it from 12.30 Volts DOWN to 1.60 Volts...?

And if not what voltage does the Speed Sensing Module need to activate/work

1st photo is Suppressor - 2nd is Speed Sensing Module