Reverse light help!!

[plymcl172]

As above its not been working for ages neither is my smart wiper. I am guessing they are connected. Someone told me it could be a gearbox sensor somewhere? Is this true also where do I buy it or find it? Its not the fuses as I have checked

any help would be great!

 

[Owen92]

Reverse lights will more than likely be the reverse light switch which is fitted to the gearbox. Doubt the wiper fault is anything to do with the lighting fault though.