recently ,we had found that there are somebody suffer the problem that the previous button and next button on the steering wheel works in contrast .
You can follows this way to solve this issue.
If you purchased our specific car stereo and we configured an specific power cable like follows .You first can plug out the white cable and plug the brown cable in ,then enter steering wheel control study page to map your buttons on the steering wheel .
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If you purchased our universal unit and didn't own above power cable.You can respectively connect our key1 wire and GND wire to your SWC pin and GND pin like follows and also enter steering wheel control study page to map your buttons on the steering wheel .
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Here is an video about how to map the buttons on the steering wheel .
https://www.youtube.com/watch?v=VxVYSwWgYb4
Any query ,you can directly contact our pumpkin customer service or write to support@autopumpkin.com .
Regards