Right chaps got a question about the old speed sensing module
I take it its not a relay as it does not click like the relay does
It has 6 pins :

1= green/red from coil/radio suppressor
31e= brown/white from cold start injector
31b= brown/yellow thermal time switch
88a= red/black from over-run shut off valve
15= ignition live
31= earth

Picture added
I have 2 of these modules one is bosch part no. 0230280116 (hich was in car when purchased0
And bosch part no. 0230280113 which I purchased after.
sorry if I have several threads just doing trial error elimination
So I take it this takes signals from the above
is it like a relay that switches power etc...?
How can you test this...?