Xtenzi Reverse Wiring Harness for Select 1988-2005 GM Vehicles 71-1858 AWH150 Plugs into car OEM Radio,Power/4 Speaker 20Pin connector For select 1998-2005 GM Vehicles, GSXL wire provides more flexibility, power handling and heat resistance High impact, OEM quality, ABS plastic molded connector for the perfect fit metra ref no 71-1857,Bestkit ref no BHO1858 and Absolute AWH150