PV2 and P4 pig tail wire connector. Commonly used on GM cars from the early 70's-94. The wire connection necessary to hook up your brake light switch.
Painless Performance 80174 Hydraulic Brake Light Switch Connector Adapter Plug
Standard Motor Products S-749 Brake Light Switch Connector
Brake Light Switch Connector Pigtail Harness 1969-2006 Ford Mercury Lincoln
FORD UNOPENED BRAKE LIGHT SWITCH CONNECTOR "WIRING ASY" 1F1Z-14A411-CA NOS
Brake Light Switch W/Connector Fits: OEM# 25320AX00A Infiniti Nissan 2003-2020
AUDI/VW A4 A6 QUATTRO (2002-2009) Brake Light Switch - 4 Pin Connector FACET