Filter Filters Wire Reducer Remove All Filters Price Under $50 (6) Condition New (6) Brand Harmony Audio (4) Stinger (2) Wire Gauge 1/0 Gauge (1) 1/0 Gauge,4 Gauge (2) 4 Gauge (1) 4 Gauge,8 Gauge (2) Harmony Audio HA-WR04 Car Stereo Power or Ground 1/0 to 4 Gauge Wire Reducer... $6.95 Harmony Audio HA-WC0 Car Stereo Power or Ground 1/0 Gauge Wire Splice Coupler... $6.95 (1) Stinger SPT521 1/0 Gauge to 4 Gauge Power Wire Reducer $12.95 Harmony Audio HA-WC4 Car Stereo Power or Ground 4 Gauge Wire Splice Coupler -... $5.95 Stinger SPT522 4 Gauge to 8 Gauge Power Wire Reducer $12.95 Harmony Audio HA-WR48 Car Stereo Power or Ground 4 to 8 Gauge Wire Reducer -... $6.95 (1)