Amp
 

Hi, I'm trying to hook up a new stereo deck and amp to my '04 XG350 but am having troubles finding a good place to run the battery hook up for the amp through the vehicle. I'm wondering if I should go through the firewall and if so where a good place to go through is, and if not through the firewall where else is recommended?
Any other tips or advice is greatly appreciated,
thanks.

Just run it up over the roof and attach it with duck tape. But seriously, an amp system in an XG? Oh well, I guess it's not that bad...

Yes, punch a hole in the firewall, and run it under the carpet.