I searched, but I am confused about installing an aftermarket head unit in my 98 LC. 1st questions is, did all 100s come with a factory amp, or was it an option? If it was an option how do I tell if I have a factory amp without removing my passenger front seat? I just ordered a Pioneer AVHP2300 DVD. Has anyone found a direct plug and play adapter without any wiring mods? Does anyone have a link to where I can purchase this harness? Thanks for any help.