I love working under the dash..... I know of no simple solution. Cram yourself up under there and carefully insert and tighten. Even with the seat and steering wheel removed it is a challenge I dont care to undertake often.
~ HB 1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery 1962 Chevrolet C10 1962 Suburban