Your record is sealed since you were a minor at the time. The RCMP will be able to tell something is up, because your prints are on file (they can see that its NOT because of nexus or whatever)
I passed an RCMP/CSIS background check, its not that intense, if you haven't been charged with anything as an adult you'll be fine.
I run a canadian HID kit company, if you have any questions about hid kits in canada or would like to check out our products please contact me here: http://absolutehid.ca
Hot: 2001 Estoril M Roadster
ZCP 19's michelin supersports, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt ZCP 19's michelin supersports, deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,
fun: 2006 YZF-R6, black