I'm working on fitting after market front fogs and have been concentrating on the switch wiring this afternoon. I have the new switch in and working and the only thing left to do is route a live wire through the bulkhead, into the engine bay and connect it to the relay, then that side's all done. before I start to dismantle the dash, can anyone tell me at which point is it best to pass the cable through the bulkhead? I'd rather not have to drill it. Really, I'm looking for an existing cap or grommet that I can use. Any ideas where I should be looking?

Cheers guys.