HOGTUNES NCA70.2 INSTALLATION MANUAL Pdf Download. Hogtunes products, the smaller connector (black wire) is positive (+). If you are replacing a Hogtunes USA 24.2 you can use the existing 24.2 power harness as long as you change the fuse at the battery to a 15 amp. Locate and cut REV SERIES 140 WATT 2-CHANNEL AMPLIFIER the “zip tie”.. HogTunes wiring - The HERD HogTunes wiring 06-17-2010, 10:02 AM. Am looking at a great deal on a HogTunes amp for my stereo.($40) used. thing I don't have is the wiring schematic. anyone has the wiring hookup, please post itd be much appreciated.ched are pics I took with my cell cam of both ends of the amp.ks Attached Files Hogtunes Stereos & Components - Parts Giant Find great deals on hogtunes stereos & components. Free shipping on all orders at Parts Giant.