1. The Scott Drake reproduction turn signal switch #00183 from Mustangs Plus retails for $116.95. For ’69, order #00185. Wiring is color coded for easy replacement. See All 16 Photos ...

Read about the turn signal steering column bypass and see pictures as the turn signals get fitted and wired onto the headlights and taillights inside Rod & Custom Magazine.

In layman's terms, the switch we're referring to is the "turn-signal" switch, which is triggered by a rod-like handle mounted on the left side of the steering column.