Like many others on this forum, I have a need to tow with the Mazda5. I put the hitch on ( relatively easy, remember those safety glasses ) but the wiring is a problem. I have a Curt wiring package that wants to run a wire from the rear ( inside ) up and into the engine compartment to connect to the positive battery terminal. After crawling around on both sides of the front, I cannot find a cheater location to run the wire through the firewall to get to the battery. I had an evil thought to run a feed from the rear power terminal to get the power but the instructions say that will be a bad idea. Has anyone done this and, if so, where did you go through the firewall to get to the battery? Thanks!