BOSS 508UAB USER MANUAL Pdf Download. Boss 508UAB User Manual 16 pages. INSTALLATION (CONT.) INSTALLATION DASH BOARD DIAGRAM HEX NUT METAL MOUNTING STRAP CONSOLE PLAIN WASHER MOUNTING SLEEVE TAPPING When the phone the car audio system, the BOSS AUDIO name will be displayed. Choose the BOSS AUDIO from the device list to pair and connect with the car audio system. Upon the BT 508UAB | Boss Audio Systems 508UAB. 3.8 out of 5 based on 425 customer ratings . 425 Review(s) I bought the wiring harness and dash kit at Walmart but you buy those anywhere really. Whats really nice is that the wiring harness for the BOSS stereo comes labeled every single wire so its really easy to match them with the wiring harness for your specific vehicle.3.8/5(425) BOSS AUDIO SYSTEMS 508UAB USER MANUAL Pdf Download. View and Download Boss Audio Systems 508UAB user manual online. In-Dash Car AM/FM Radio, CD/MP3 Player with USB/SD Card Inputs. 508UAB Car Stereo System pdf manual download.