I somehow made a mistake and ordered JBL GTR-10 which is a 2 channel amp. Ordered and received this several months ago and just opened and realized mistake. I claim to be no stereo guru so what are y'alls thoughts on wiring 4 speakers. 2 in the back dash and 2 in the front...factory locations. Read a bit online about parallel and series wiring. Also read some stuff that said do not do it. I am not looking for competition sound. What should I do?