Man, I can't wait to mod my '00. I've always wanted to have control of the fog lights

Here's a quick question for you guys. Using this mod, you can very easily drain the battery. I know I've seen things in cataloges that cut off the connection to the battery when the battery's charge gets too low.

Has anyone tried one of these? Do they really work?

If so, it might not be a bad investment to save all those jumps (I've got an auto).

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'00, Forest Green, XE 3pk