The Stovebolt Site Forums The Shop Area Engine Shop TBI on a 1959 235

What ignition switch are you using? Especially if you are keeping the foot starter? Should just need the stock 6 cylinder ignition switch. If you are using an ignition switch mounted on a later model steering column then you won't need the purple wire as you will be activating the starter with your foot.

On most gm vehicles with an automatic the purple wire goes from the start position on the ignition switch, to the neutral safety switch and then to "S" terminal on the starter. On a vehicle with a manual transmission the purple wire goes from the ignition switch, to the clutch safety switch, then to the "S" terminal on the starter.

Since yours is a foot activated starter, the purple wire does nothing. So removing it from your ignition switch won't hurt as it doesn't do anything even when connected to the side terminal. So you can remove it.