How do you connect the red-yellow and blue-white wires on a 1985 Honda to a JVC KD-S640 with power ground red accessory and blue-white wires?

Answer 1

on your car the white w/blue stripe is 12 volt power you connect it to the yellow on the jvc stereo and the yellow w/ red stripe is the 12 volt accessory connect it to the red on the jvc stereo and connect the jvc stereo ground (black) to your cars black wire on the harness