[Whipple]

Hey Guys,I have the wireless meistershaft exhaust valves, the controller just needs a 12v pos and neg connection,I found out even when not in use it puts a small draw on the battery leading to a warning on my dash after about 5 days leading me to believe it was a bad battery.
I have been using a piggy back fuse holder in the rear fuse box for my power source but all these fuses always have constant power from what I tried.

Can someone please tell me where I can get a switched power source in the truck, what wire or maybe I missed something in rear fuse box any info would be appreciated.Thanks