Ok quick run down i dropped my car off at a guys house to install my N2O kit after a few weeks he calls me to come get it but when i get there the car want start the batt is dead which he said he just backed it out 20min ago and it was fine so we tryed to jump it off and it threw sparkes every where like we hooked it up back ward. so he checked a few things out and still same thang so its been 4 days now and he said he checked everything he done and its fine but still throws sparks every where Any ideal what we can check ? he undone the alt and still done it said he undone all the hot wires he ran and still sparks. It has a bottle heater, and everything eles needed to work. MSD 6al, MSD window switch, MSD coil etc. Any help will be thankFul


Thanks