Hook up radio to jeep cherokee

Buy a 12 volt lamp tester (like a screw driver)check the wires when car ignition switch is turned on ,connect the wire side of tester to metal ground of ur car which supposed to be negative and other side of tested pin to the wires jack of ur car which is for radio connection previously,find out 2 connection points which are positive terminals one lights when igni switch is turned on the other one is permanent power terminal.now there are three wires of ur new radio one is black which should be connected to ground or metal body of ur car negative terminla and yellow connected to permanet power terminal and red one should be connected to power turned on with the swith which is called switched power
.now try to find out other four groups of terminal two for front speaker two for rear speaker each speaker has two wires ,can find out the connections by connecting a dry battery cell to the wires to identify which wires of speakers sound when battery is connected ,front pair of wires is for front left grey pair is for right front green pair of wires of ur new stereo is for left rear speaker and purple or blue pair is for right rear speaker
.these colors are globally known .the wires of speakers must not mixed with each other
black is for ground negative red is witched power and yellow for permanent power.
donot use long screws to fit ur new radio .Best of luck