[VetteVet]

What I would do to troubleshoot the lights and the turn signal switch is to unplug the column connector and run a jumper between the brown wire and the dark blue wire (front right turn and indicator lights power wire) and see if you get dim lights. This would indicate a poor ground on the light housing. If they are bright then use a multi meter on the turn switch column plug and check the ohms between the brown wire and the dark blue wire and check for near zero ohms when you select right turn. If you get high resistance then the contacts in the TS switch are corroded or dirty and you are not getting full voltage through the switch.


Here's a good thread on the turn signal switch.

http://67-72chevytrucks.com/vboard/s...d.php?t=695511