2006 dodge dakota stereo

what kind of amp are you planning to install? If its for a sub amp id suggest finding a retailer that you can buy a LOC (line output converter) from, preferably and adjustable one. Most major retailers would have them in stock. Then you would wire this part into your rear speakers which are      LR Speaker (+)          DARK GREEN/ DARK BLUE                LR Speaker (-)          DARK GREEN/ ORANGE                RR Speaker (+)          GRAY/DARK BLUE                RR Speaker (-)          GRAY/ORANGE behind the radio (best place for an loc just in case you change the deck later on) that way on the factory head you can fade to the front on adjust the level or signal to the amp after all the amp setting are done, If you are looking at doing a 4ch amp for you "highs", I'd tell you to wait till you have the money to upgrade the factory head unti and the speakers at the same time along with the amp, its more beneficial that way instead of wasting money to upgrade cuz ya blew all your speakers , lol. Best of luck to you, and if you need anymore help feel free come back and bump this post a to get more help sS rtfm