Being an install tech, the "proper" way for us to do it was to drill a hole in the firewall. You may need two grommets, because the firewall is double deep. I ran 4g to the back via the passengers side, and ran RCA's on the drivers...
:silvia lover: You can split that one remote wire into two no prob... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt='

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