No Ground on taillight or headlight? Ignition wiring

[motorbreath]

So i bought my headlight and taillight and they both only have two wires, headlight has red and yellow, n tailight has green n black? Also i bought a tc bros ignition key switch and was wondering which wire goes were on the back of it thanks guys

 

[member3480]

Tail light only has two wires on after market ones MOUNT IS GROUND
one is brake light other is running light
Most head light have three and one is ground you just may have mount ground and two are H/L TEST WITH battery useing mount as ground

 

[motorbreath]

Thanks, so just hook the headlight up and test the thing wrks for me

 

[Ksboy19]

which wire do you hook up through your brake light indicator?