G, so is mine
Inside black heatshrink
Have to be a little careful mounting it underneath though, depending on where your receiver is, and which receiver you use. When i was running NiMh at nationals last year, with KO 302 reciever, with PT under top deck i had massive interference (i.e couldn't drive car in practice at southport!). On top of top deck it was fine. Just that 5mm or so move made a massive difference.
Now i'm running LiPo, receiver is a touch further away from front of car/hence PT and all is fine with it under top deck.