I fitted one to my TR4A about 15 years ago and it was next to useless (and am thinking that was a flat one but can't remember) so don't want to make the same mistake again.
I see Fosseway do a clip on type (for half the price) but thinking that may be a bit odd on the S3, as I have the original door mounted one on the driver's side. Am I wrong?
Help....I used to be indecisive but now I'm not sure

Dominic