Key Dimensions: The threaded portion of the switch is 3/4" long

the black wire is for the running light and the red wire is for the brake light

OEM # 57-1750

This slide hammer makes pulling the auto advance on your Triumph

If you want to compress the grommet even more simply file down the end of the spacer

#8314 CHR Complete Stock Hardware Kit - 1981-1984 Harley-Davidson Shovelhead - Chrome Plated Vendor_Cleveland CycleWerks Key Dimensions: The threaded portionComplete stock hardware kit for Harley Davidson Shovelheads 1981 1984, chrome plated. Each kit contains all the stock motor nuts, bolts, washers and studs for your motor. The kit includes primary cover screws, lifter base screws, circuit breaker screws, case studs and nuts, timing plug, cam cover screws, cylinder base nuts and washers, oil pump nuts and bolts, transmission side cover nuts and washers, transmission top screws, transmission fill plug,