Good work Mate!
I have bought the same inverter and will prolly run a wire straight from battery. b4 that I got some questions for ya.
So did you end up using the fuse that you bought from walmart? (model/part number for that?) is it usefull ...or the 40 A fuse on the rayovac will do.
And how do you kill the inverter after turning the car off?
and any other tips that u might think would be useful in running the wire from battery to the inverter would be much appreciated.