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Moving along. TIme to start thinking about installing some amps. Today I looked for that sweet spot to have my amp power wire go through the firewall. On the passanger side, I found a super easy access point. I am concerned about what the purpose of this hole is. It is currently pluged with some rubber toob that runs to the middle of the dash. Here are some pics of what I am looking at. Any idea what this is for? Will I be messing anyting up by using this hole. Thanks again for any help.