Just make sure that the chassis of the ballast is not grounded or touching ground.

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Pioneer Premier DEH-P800PRS
Pioneer Premier TS-A 520PRS
Pioneer Premier TS-A 720PRS
Digital Designs M3
Digital Designs S4
Digital Designs A2 for DD tweeters in my dash
Digital Designs 9110d x 2
Streetwires makes my world go around
Hushmat keeps it real
Kinetik Batteries keep it running
142db in an SQ Sentra.