Most folk dont know that any trailer or board MUST have a fog light ,many dont,4 wheel trailers must have brakes using the new type hitch brake ,unless its a old build,many of my new units were old ones,wink wink.
Main jet semi blocked.
Screws 2 & 3 are for idle mixture control,one air the other fuel,dont fiddle if you cannot tune engines but get a old timer who knows the engines.
Mine are bolted through using garden fence post clamps,also a seal under them and the panels can be removed from the brackets should the fail,i used a boat deck gland fitted under to take cable through roof.
Just remember that al vh have to have front fog lights,80mm from edge and below bumper,these are not running day lights,day lamps must be fitted else where and have a defused scater ,i see many cars driving around with fog lights on which is not the same as running lights.
Front fogs must only...
All my outside bulbs are led except the winkers,you can also use these small button led lamps back and front for night parking on a sep switch to be seen and safe.