Right photos uploaded so here we go.
First you need to get the steering column off your car. This is not very hard and Andy describes how to do this in post #19 or you can get a haynes manual which will also tell you how. I found refitting the column was easier with a second pair of hands but easily doable on your own.
With the rack removed you will have this
The black box on the far left of the photo is your steering lock. This now needs removing from the column. to do this i used a small cold chisel to tap around the anti tamper bolts that secure it to the column, They are not that tight so come out pretty easily.
With the lock off on your bench (kitchen work surface in my case as it was cold outside
) You can see on the underside is the large flat blade that sticks out into your column, and also the the little slide that will slide across to lock the blade down when you remove the black plastic cover. The black plastic cover now needs to come off. I achieved this by sqeezing the end where the blade is as there are clips and prying the other end up gently with a flat blade screwdriver, you are best to attack it from the bottom side in the photo below as this is opposite to the circuit board so no risk of slipping and hitting it.
Once the cover is off i would leave out the anti tamper device which is the little bit of black plastic and spring in the photo above. The motor and mechanism can now be gently prised off as it is clipped to the circuit board, i gently teased it away by prying between the white plastic spiral cam and the silver actuator arm it operates.
The circuit board can then be removed, it is held on with what i think is T8 torx bits as none of mine fitted (T6 and T10) but i had a small flat blade screwdiver that fitted very snuggly and used that.
You can now see looking at the board that there are two limit switches, i left the top one well alone and concentrated on the lower one, my contact cleaner destroyed the little green seal so i pulled it right off to make it easier to get the spray right into the switch. I sprayed it a good few times and each time worked the switch in and out with my finger.
