Hello PPl i just installed a system in my car its Audiobahn n Pioneer. Ny way the problem is with the power cable i have to batteries and fron the positive terminal of the front battery a Discrete Audio 0 Gauge cable runs down to the positive teriminal of The Rear Battery. The Voltage on the amp was still low so i decided to see the condition of the cable i opened up the phonix gold terminal took out the wire and pealed it a bit so could get out the shiny part for better conduction . but when i pealed it i saw that the wire was covered by some Red Powder thing . I have no idea what this is can any 1 help me with this Its covered with a layer or red coloured powder type thing. Please help me