Need help!!!!

Well i went to HLJ, to buy some Plug Cord and Mesh Hose, but i 'v got a problem what is the ideal size for a 1/12 scale, 0.9mm, 0.45mm. I don't no what to buy, i'm completly confused.

well measure a lead on your car and divide it by 24? or if the hose looks thick like a coolant hose then use the 0.9mm diameter tubing, if your after spark plug leads use the 0.45mm dia tubing. but just do what feels right

oops i meant divide it by 12 not 24, sorry