Hey guys, long time no chat!

I'm needing some general advice, I have had a strange issue with my rear window wiper & the headlight wipers.

Months back my rear window wiper stopped parking correctly, no real reason or obvious cause, the motor was clean & dry, free of rust or obvious mechanical damage. This however has since dissapeared only to be replaced by a broken headlight wiper motor (one works the other doesn't).

My silly questions are as follows....

1. Could there be a link in the faults (electrical or elecronically - software)

2. Can I replace the headlight motor cheaply with a S/V/C70 motor?

3. If not then can anybody source one as I'm losing the plot on where I can obtain one on the cheap.

Cheers as always chaps & good holidays to you all.