Hi All,
I may be the only one who have had bad experience with this little devil and I thought it only happened on the S1 but I experienced it on the SS as well. The symptons are you are happily driving along when suddenly all power goes - power steering being the biggest shock - and you have to find somewhere safe to stop asap- on the S1 it happened at 70 mph on the A34 and I can assure you life does flash by you! The SS suffered the same fate and I had a new switch installed at the dealer but it happed a couple of times since then. The car now is at the factory having the new window mechanism installed as well as the "factory upgrade" to the fuel gauge but they did look at the switch and said there was a bit of corrosion at the connection that they feel is the problem - and found this on other Aeros. So, if you are experiencing the same issue it may be worth checking there before commiting to a long wait and a chunk of money for the switch.
Just for clarity,this is the isolator switch under the bonnet that also helps preserve battery life
T

15 Weissman GT5
11 Aero8 SS
21 Q7
23 RR
24 Def'r 130
1960 XK150 DHC
1970 E-type
2024 Huracan Tech