I did the
EZ-Wire kit 4 years ago and I'm totally happy with the whole deal.
It's great having extra fuses and lines ... I just added a 1955 Buick clock under my dash -- no problem figuring out where to wire it. I just grabbed a spare wire that has steady power from under the dash, wired the clock, put a fuse in and I'm all set. You can see the clock install
Here And when I put power seats in, I'll have the same enjoyable experience.
You can see my 10-Day EZ-Wire project, day by day,
Here