I used a similar Cyron set in my IS and there was no way to get it in with the existing clip without doing some damage so I made a clip to fit out side. They are VERY bright. I may have been able to remove the clip retainage screw and sneak it in but I did not want to drop the screw down into the housing. The reduction in amps is noticed as soon as you start the bike and it gets more volts when cold allowing for more spark. Volts jump to 14 as soon as the motor turns over.

