Just my two cents again...If I were to run a cable under a car it would be down the frame...although I've never had to do this. I've used the factory grommet before and just think its to much hassel. I use a 3/4" hole saw depending on what I'm running, pop a grommet in there and I'm done with that in 15seconds. Alot of people are scared to do that cause they don't want to hit anything, but thats where planning comes in. To each his own.
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