Also that out the the filler tube before you lower. The ground wire is on the fuel line at the tank where the rubber line is between hard fuel line and tank. And like stated above, get as much fuel out of the tank before you drop it.
Derp, yeah. I thought about the filler tube for some reason as I was falling asleep last night. I guess if you've never done it before, it may not be obvious :) Definitely take out the filler tube. Remove the grommet from the trunk floor, and unscrew from the filler hole area, then it should just slide out.
