@scotia Hi, I haven’t bothered to do it, I have headlamp wash on my car (factory fit xenon swivel lights with pop up jets) and it’s crap, may as well wipe it with a cloth every now and then.
If it made a massive difference I would like with the LED headlight conversion, MFSW cruise control and parking sensors.
Oh latest fitment is a Blackvue 2 channel dash cam. The rear camera is the waterproof IR which is fitted with VHB tape, the cable goes through the plastic LED number plate light unit so not to damage any paintwork or invalidate the corrosion warranty. If I want it back to factory original I just replace that number plate light unit which are around £15.
Works really well as an always on rear view camera set to mirror mode, an old iPhone is used to connect to the cameras Wi-fi and is used as a rear view mirror.
A hotspot allows me to check the van 24/7 remotely too.
This is a screen shot from the phone. It’s black and white as it’s an IR camera for better night view when Parked up, also they don’t do a waterproof rear camera yet, I have a solid tailgate so I was limited on options.