You can buy the terminals seperatly, vehicle wiring products sell all the parts seperatly, so why not just replace the terminals and still use the original outer plastic connector?? Ive rebuilt the cossie loom recently, replaced all connectors and added a few new earths and supplies in there whilst I was at it...handy for me tho as Vehicle Wiring products is only in the next town

www.vehicle-wiring-products.co.uk