Which one is it ? please

I know this is most proberly a real newbie question but which one of these is the reverse light switch on my Mk3 Golf GTI please, as I dont want to start taking the wrong one out thanks

 

Hi,

I think it's the 2-wire plug for the reverse lights - the other is probably the speedometer sender.

 

Yep, 2 wire plug is your reversing light switch, 3 wire is your speedometer.

 

Thanks all