Using my installer background, I have used a DEI NiteLite system a few times, loooong ago. Could probably still work just fine tied into our system, possibly without even using the high-current relays, but tied to the BRZ stalk. If one of you overly ambitious people beats me to it, I'll post up the info when I get around to trying....when I decide to do fogs..
Link for ref of product...
http://www.sonicelectronix.com/item_...cted-545T.html