This one:
http://www.ebay.com.au/itm/RADIOWAVE-Co ... SwCypWofcx
However, before I install I'd like some help. This is the install guide:

I'll need to make a 2.5 meter harness to go from the secondary unit to the main door actuator. It'll have to go through the engine bay, back through the right fender and into the door panel.
I've already found the constant under the dash, so that should be fine.
My big question is how to make the lights blink. The purple wire in the diagram is for that. Should I connect it to the hazard light wire, will it work?