yea, use washers, and when i used them, i used two nuts on each side of the wiide(tightened the wire terminal between the two nuts) for a better connection
ok, one more question, im going to wire it in parralell, its dual 1, can i just run each positive and each negative to the bolt or do i have to run positive to positive and then to the bolt? sorry this is the second set up ive ever had, and the last time i did this was a year ago, so i wanna be sure about this...