Solenoid box pipework diameter

Does anyone know the pipeworks diameter in the solenoid box on a BE5 B4? Wanna order silicone piping to refurb the box.

Think they are 4mm, same as the ones coming out of the box.. Wouldn't be 100% though

I'm interested in this too lads only cant buy stuff online!! you guys know where to get the hoses here? and what way to clean the solinoid's? sorry if its a supid question but ive searched the forum and can only find questions about hoses! My membership seems to have ran out so i cant pm but spoke to niall barry today so will be sorted for the parade are you guys goin? Many B4's i wonder? comparing will be great

To clean them use some carb cleaner..do them one by one but its some maze in there

Thanks i got a PDF to show me where they are, did you have to do anythig inside the car? unplug somethin under the dash to put the car in safe mode? Did it take ya long? where did ya get the hoses? sorry for all the Q's