I pushed the roadster out to do an initial Headlight alignment using tape on the garage door. With the ignition off...

As I was backing up I noticed when I hit the brake that the brake lights as well as the front running lights came on, as well as the dash lights. If I pulled the Headlight switch out one notch the running lights front and back worked as normal. Since I used a Ron Francis wiring loom I don't know what the heck happened. Not a serious problem, but why...