Is there anyone here that could tell me how to make a loop back harness for a 2015 gmc Sierra double non Bose? I have the two metra 71-2107 & 70-2057 connectors 20 foot of 9 wire and tesa tape just need to know what to do next
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Is there anyone here that could tell me how to make a loop back harness for a 2015 gmc Sierra double non Bose? I have the two metra 71-2107 & 70-2057 connectors 20 foot of 9 wire and tesa tape just need to know what to do next