Excellent install! Couldn't have done it better myself

I see that you're tapping into the primary side of the fuse (power distribution) box as well

I'm currently doing the same thing, but I'm thinking about getting a 40A or 60A fuse for one of the spare slot and "double-fused" my power connection...I know...I'm just being a bit paranoid when it comes to electronics protection. Anybody know the part number for a 40A fuse that will work in the power distribution box? Oh...the type of nut used in those slots would be helpful too if anyone knows as the those empty slots don't have any nuts on them. Thanks for sharing your pictures. Where did you end up mounting your amp for the sub, by the way?