I like to source looms from whole cars - you get the same gauge wires, in the same colours, and spare connectors (a good source for terminals).
Best thing you can do is practice - practice pulling apart terminal blocks. Luckily the HQ-HZ oned are easy enough, and a handful of jeweller's screwdrivers with the odd bend & ground-away bit will do the job for most of them.
This might be worth considering:
http://cgi.ebay.com.au/w...wItem&item=370364520557
After playing with a lot of later model stuff with much smaller connectors, I'm thinking about one of these:
http://cgi.ebay.com.au/w...wItem&item=400209356557
And if I had limitless funds I'd go for something like this:
http://cgi.ebay.com.au/w...wItem&item=370486124358
As far as your looms, I'd concentrate more on getting rid of the damaged sections by splicing in new wire, but retaining a lot of the old wiring.
Solder the joints well, and cover with heatshrink - it will all be hidden under the loom tape anyway.
If you want to do new runs, you'll need to source new wire & terminals.
If you can't source new metal crimp terminals that fit your connectors (check with an auto sparky) then you'll need to perfect a method of removing the wires from old ones, "un-curling" them, and re-using them - but with a bit of solder to make it a good joint.
One tip I can also give you - get a big sheet of ply, lay the harness out on it - T'eeing off any branch of the loom where it branches off - making sure it's all kept tight on the board.
Secure it to pins/screws fitted in the board (velcro straps also work well). Label everything well on the board, and even have 3 or 4 different boards for different sections of the car's loom.
This way you can work on the loom parts in smaller sections - on the board, and maintain the original lengths & locations of connectors.
You can untape it a section at a time, and re-attach it to the board to keep the wires together (short strips of masking tape work well here).
Golden rule with this method:
- Label every connector & branch of the loom.
- Draw a connector pic beside each one & label which pins are what colour wires!
I've jumped around a lot, and some of it has probably gone over your head, but I've made lots of looms, and repaired heaps of them, so it's a bit of "information overload" for you!