The cheap positive cable is an offshore repop made by goodmark.I,ve heard bad things about this cable....wrong guage wires,possibility of a melt down etc.I brought in 10 offshore repops of the 66-9 B and 10 70-74 negative cables...we had 100% failure rate...they would heat up and the cable end blew out of the lead head.The best cables are made by QQE in the USA.They are of OE quality ....correct guage copper wire,nice ends etc.They are a liitle spendy but money well spent in my opinion.