|
^^First of all, the 'red gearlike knobs' are there so you can manually move the lights up & down by hand. Spraying them with WD-40 will only clean any moisture-related contaminants off of them.
The screeching you're hearing is either the assemblies binding on the hood (adjust hood position), or the rod-ends etc are badly in need of cleaning/lubrication. To lube, use standard lithium or general purpose grease. DO NOT use WD40 as it is for water displacement (hence 'WD'), not lube....
Easy peasy.
__________________
|