Technical abarth sillyspeed gearbox sensors

[Donkey]

having spent a couple of hours searching the forum trying to find out why my abarth kept on throwing a wobbly, i have found that it is most likely the connecting that is next to the passenger wheel arch and the sensors.
however, i have not been able to find any methods on how best to clean the sensors and re-route the wiring loom.
if anybody could give me a few pointers to the best way to attack this would be great.
cheers

 

[krismc]

I recomend first cleaning the main earth connector that caused mine to throw a wobbler and make a garage think I need new ecu.

If you look by your battery box and selespeed fluid tank attached to the arch is a small black box, unscrew clean the contact point to the body and put back on