Hogster,
I bought all my weatherpack connecters in Brisbane from a company call Auto Electrical Imports. Their website is
www.visonalert.com.au, email address
sales@aeimports.com, telephone is 07 32743077 (they have moved to a larger building, so I don't know if they are using the same number). Another place to try is Ebay (US). I bought enough weatherpack connectors, spare seals and pins and good quality crimp tool and pin removal tools to wire at least another car for around a third of the price delivered.
AEI's prices for weatherpack connectors were around half that was being charged at the auto electricians.
I bought all my gear I needed to buy for the wiring from them. They have everything that you need and the prices are reasonable.
Warren