Here's another option if you like to keep the completely stock look ( I did it because it's cheaper and I already had most of the parts). I used 2 DPDT toggle switches mounted under the dashboard on the left side. Also required is 2 diodes and a blinker. Diodes can be wired on the back of the switches and the blinker is clamped to the under dash brace out of sight. Same wiring and lights you would use for any other turn signal installation but all hidden. Not self canceling. You can get 4-way blinkers by turning both switches on.
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Last edited by Harold41; 01/19/2021 3:58 PM.

Harold Wilson
41 Chevy 3/4 Ton