Okay, i've completed searches on the forums/google and no luck. Ordered an HID kit and the instructions state simply enough to connect positive and negative terminals from the ballast harness to my 07 Exige S wiring. Trouble is the Exige wiring is both the same color. No black, no red. does anyone know how to differentiate without me buying a tester? If it helps the OEM bulb has a 2 prongs, one near the notch to seat it and another prong for the other connection. Help please.