I just installed an American Autowire #510603 into my '74 Duster. Other than needing the crimping tools the kit comes with pretty much everything you need to make it work. I actually ended up with a pretty good amount of wire and connectors left over. I'm not running an MSD ignition, just a "ready to run" pertronix billet distributor. Aftermarket radio was a piece of cake to hook up, has its own circuit in the AA harness. I made my own small harness for my digital fan controller, I had enough wire left over from the kit to do that. It has enough wire for a bunch of different options and years on the different A-bodies, so you end up with some extra stuff.
The 17509 is an external regulator alternator, so that's not the "1-wire" set up you need, unless you meant to type 175091, which is an internal regulator set up. I've had good luck with the Power Master alternator I'm running so far, I have a serpentine belt though and electric fans etc so I'm running this one
Powermaster 8-58529-103 Powermaster Street Alternators | Summit Racing
I bought this kit for wrapping the harness. It's just regular nylon though, there was another thread here somewhere about an actual fire resistant wrap. It worked well and I have a bunch left over as well.
Painless Performance 70970 Painless Performance ClassicBraid Wire Wrap | Summit Racing
As for "extra stuff" the AA harness comes with all the fuses you need for the block, but it doesn't have any extra really so I bought this, its for one of their other kits but it has a decent selection of extra fuses
American Autowire 510212 American Autowire Intelligent Fuse Kits | Summit Racing
If you have a bunch of extra accessories you might consider this kit
American Autowire 500429 American Autowire ATO Fuse Box Power Tap Connector and Terminal Kits | Summit Racing, it has the connectors to tie into the extra spaces in the fuse block to run power to various different extra accessories. I bought it, I haven't used it. There's a block of like 6 extra circuits for most of the common things people add for these cars anyway (fuel pump, stereo, power windows, locks, etc) that's part of the harness/block already. I just bought the kit so I'd have the connectors for the fuse block in case I ever needed them in the future.
If you run LED bulbs or anything for your turn signals you'll need the LED flasher relays, the ones that come with the kit are for standard bulbs. But really other than the crimpers and some extra fuses there's pretty much everything you need. A good set of wire strippers makes the job easy too, I already had a set similar to these...
Klein Tools 11063W Klein Tools Automatic Wire Strippers | Summit Racing
And the AA strippers. Good grief the price on these has gone up over $40 since I bought mine in April! I'm sure you can buy something similar for less, I just bought the AA ones because I wanted to be sure I had the right tools and I hadn't done a full harness like this before
American Autowire 510587 American Autowire Wire Crimping Tools | Summit Racing
