After updating the master cylinder on my 1966 Ford F100 from a single jar to a dual, I had to also convert from the hydraulic brake light switch on the old master cylinder to a mechanical one on the pedal. This item fit the bill perfectly. I whipped up a bracket out of angle iron, pulled the brake light wiring though the firewall, and plugged the factory female bullet connectors right on to the switch with no clipping or splicing. Works like a charm.