Need help on what wiring harness to purchase...

I Just Got Done Installing A Painless Kit In My 70 Duster. It Was A Easy Install With Replacment Of The Bulkhead. I Am Having Nightmares With The Rally Dash But That Is Not A Painless Problem. The Kit Has Extra Circuits For Elec. Fan, Third Brake Light And Several More,it Is Neat Clean And Wires Are Marked Very Well,the Fuse Block Is Nice,all Connectors Are Included, Headlight Plugs And All. Hope This Helps. Steve