I quit using alligator clamps and started using visegrips with a bolt welded on the side of them then you don't have week clamps because the spring got hot
The exact plug for the Cat Auxillary Starting Receptacle can be bought here
http://www.alanco.com.au/product/BAT-WC1897_item.html
or here
www.ReadyWelder.com.au
The receptacle can be found here:
http://gentech.net.au/index.php?main_page=product_info&products_id=67
Then you can put the same setup on your truck and use the one set opf jumper cables.
regards
Bob