2005 mazda tribute remote start add on

Hello, I have an ultra start 1155tl with a xpress Tbxkey transponder bypass kit. I wanted to know the best way to connect my ultra start add on to my keyless entry so that when I double click my lock button on the keyless enrty it starts the car. Should I connect the Start activation input wire from my Ultra start to the door lock wire on the drivers side kick panel. Also the input wire is + but the door lock is neg do I need to add relay if so how. I more of an audio guy so if I'm way off thats why. Thanks Guys

By the way heres the manual for the ultra start http://www.ultrastarters.com/products/1155.html herers the TBXKEY transponder kit: http://www.xpresskit.com/product.aspx?productid=303 also with this kit do I still need transponder keys or is