aside the wires and terminals what should be available anywhere locally at a parts shops, here the related parts to a nice fix

bulkhead
http://www.megapartsusa.com/proddetail.asp?prod=104%2DBH7074

forward light harness which maybe will get broken if you try to remove to check the red wire terminals condition
http://www.megapartsusa.com/proddetail.asp?prod=MP%2DQ8&cat=749

they had the engine harness plug too, but maybe they are out of stock at this moment ? contact them just in case. Couldn't find any other on ebay, but just in case this is a full engine bay side set:

http://www.ebay.com/itm/Wiring-Connector...nc2&vxp=mtr