I have an 86 camaro berlinetta with digital gauges. Iwant to swap the digital gauges for dial gauges. wut is the difficulty rating. is it a unplug and plug or do iu have to have the wiring harness. i'm looking to get another camaro so if i need the harness i will have it. I was also told that when you close the hood the dash and tail lights go out. i think i found the issue but if anyone has any suggestions they would be greatly appreciated. thanks.