I have the Relay Kit in my Subaru. I've had zero issues in 2+ years. I can say the lights do come on pretty quick vs. others where I've seen long warm up times.
Personally I'm with the it's better to be safe than sorry crowd
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1996 Z-28: Bolt-Ons, Harwood Cowl Hood, 18" Black Z06s
2005 Subaru Legacy GT - Stage 2 - My DD
2012 Audi S4 - The Wifee's Ride (Wait - the wife drives the fastest of the stable?

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