Quick wiring Q: RB20.

[driftxing]

I've been having problems getting a good connection on my rb20 ignition relay wire. First i had it ran to a kill switch, worked fine, then one day it just shorted out, so i ran it off the battery for a few days, worked fine but ghetto. So I wired it up to the ignition switch fuse wire like it should be, now the car will sputter and pop at high rpm and high boost. So I know the connection isn't good since it does it half the time. Where else could I wire up my purple/white wire to?

I need a 12v switched that stays at 12v when starting.