If you want cheap wire use weldingsuply.com here is the link at the bottom is like 3.00 per ft. http://www.weldingsupply.com/cgi-bin/einstein.pl?Next::1:UNDEF:OR:terms::PA
When I tuned my system i tweak the setting fist If i have to then I use my dd-1. I don't know if it will clip if you go the other way around but that just me you can do it anyway you want its your car your decision.