light/wire/grommet question

dunno if any1 out there in Grease Monkey land wants to help answer this but I'll give it a go
Im gonna custom mount 2 of these as indicators at the front, upright so the visor is at the top (sideways would block the light being seen properly), anyway the plan involves changing out the hollow bolt that has the wire running thru it, as it's too short for the way Im mounting it, & put a normal bolt.
which means Im gonna drill a hole in the shell of the light, to run the wire out, instead of the wire comin out thru the bolt.
I wanna run the wire thru a rubber grommet to keep the light watertight.
My question is, where the heck do ya get a little rubber grommet like that? what sorta place would i go to for that? & dont say 'Grommets R Us' or I'll beat you with a stick
or...are there longer hollow bolts available (I doubt it, but throwing it out there anyway)

I did the same thing Brett. Got gommets at Repco.

cool ! thanks

Para rubber also have those...

You can slao get blanks if you cant find one with the right size hole

Grommets R Us went bust in the early 90's, para rubber brought them out

what about taking said longer bolts to someone with a lathe and doing it.......properly?

You could also try somewhere like JCar electronics - bound to have grommets and/or hollow bolts...

GROMMETS R US, Still your best bet bud.

They're goin on the end of the bottom bar, might go lookin for grommets tommorow, cheers for all the info, you guys are more helpful than i could ever have conceived in my wildest dreams, who would've known that para bought out Grommets R Us & Woody still said Grommets R Us even tho i said i would beat with stick, where else would you get a such a classic collection of such great answers