LMC light question

[1980c-10 mybaby]

i recently purchased the Euro 200mm headlight from lmc. i also bought the replacement halogen light bulbs so i can see which ones i happen to like better..... my only question is do i have to get the heavy duty headlight harness also? i going to be ordering the park-lights and side markers before monday and if i could get some answers that would be helpful.

Thanks Guys
Truly 1980c-10 my baby