1978 GMC P-Series OE Wiring Harnesses & Stereo Adapters
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PAC® - Adjustable Voltage Adapter$33.72 + Save an extra $1.70 with iD FastTrack -
PAC® - Dash Mount USB Adapter$17.22 - $33.01 + Save an extra $2.00 with iD FastTrack -
Axxess® - USB Car Charger$40.05 + Free Shipping with iD FastTrack -
- Scosche® - Amplifier to Speaker Wire Harness$33.02 + Save an extra $1.60 with iD FastTrack
- Stinger® - Quick Disconnect Power Plug$26.55 + Save an extra $1.30 with iD FastTrack
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- Metra® - Turbowire Harness$13.85
