I am installing in a base-model 2007 Dodge Caliber SE. I connected all the radio wires. I connected the red / black / yellow wires to the corresponding ones on the harness. The unit has power as the face opens and closes. However, i can't get it to power on. Does the brown wire need to be connected first? is the thing broken? where do i get the wiring plug for the back of the player
Do you need a wiring harness for the back of the unit? All you have to do is google "wiring harness for vr3 cd400 and you will have allot of options to choose from. If you connected the red which is 12v +, yellow connects to 12v for radio memory, and black goes to ground. Brown is for external amp turn on. Check to make sure your connections are correct. Do you have an adapter harness that plugs into the factory radio harness? You can get one from Wal-Mart or best buy or online. So you don't have to cut/splice into the wiring harness coming from the stock radio.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/mark_b53a7494531bf96d
SOURCE: VR3 640g roadmaster won't "power on".
what u need to do is get a different wiring harness for it, i had the same problem the harness comes with a gray power block on it
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