i recently bought alpine iDA-x200 head unit for my 93 del sol, tried hooking it up and i have yet to turn it on. I didnt buy the adapter for it so i cut the old harness off and crimped the wires to the new alpine harness. Ive double checked everything many times and i know everythings hooked up right.....i think: white/blue (battery back up +) from the car to yellow (battery lead) on the harness, yellow/red (ACC+) to red (ignition) on the harness. Ive checked the fuses (except on the unit, i dont knw where it is) and theyre all good, ive connected the old ground from the head unit to the new one and grounded that to the chassis, the ground makes blue sparks if i take it on and off so there is power going to the unit but i dont know why it wont turn on. the illumination wires are correct too (red/black to orange on the harness) and all of the the crimps are insulated. driving around with no radio is starting to become really really boring.