backside of light bar.. nevermind the yellow LED it will be white when Fry's restocks. 4, 5 volt LEDs. ran two each in series ( thats + to - ) then ran those two groups in parallel to match the 9 volt battery (close anyways).
Below is the Light module. The Losi kit comes with this module, 4 chrome light housings, 2 headlights and 2 tail lights. I cut there LED's off, used the headlight wires to run all 4 of my roof lights, and will use the empty wire they had running the tail light LEDs to run 3 3.2volt LEDs for the rear ( two tail lights, one amber light, not done yet. )
Here is the battery pack. Everything is just double sided taped onto the truck.