Si sedan custom sound system set up, Subwoofer and Amp in the trunk. | 2016+ Honda Civic Forum (10th Gen) - Type R Forum, Si Forum - CivicX.com
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Amazon.com: Scosche HA13B Compatible with 2006-11 Honda Civic Amplified System Wire Harness/Connectors; 4CH RCA w/Sub Amp Input Wire Harness/Connector, Non-Navigation : Electronics
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