When installing the machine, be sure to connect the wire correctly. If the installation does not turn on the machine, connect the red wire and the yellow wire to the positive pole of the 12 v power supply, the black wire to the negative pole of the power supply, try to see if the machine can normally turn on. If it can be connected normally, then it may be due to the wiring problem, you can ask for our help, so that you can use the product better. List: 1 x Car MP5 Player 1 x remote control 1 x power cable 1 x User Manual. We will reply you within 24- 48 hours.All items will be checked before packing. All items are new and of high quality. This item is in the category "Vehicle Parts & Accessories\Car Parts & Accessories\Interior Parts & Accessories\Other Interior Parts & Accessories". The seller is "best-aladdin2017" and is located in this country: CN. This item can be shipped worldwide.