headlights on, exterior lights don't blink

Asked by Oct 23, 2016 at 01:11 PM about the 1971 Pontiac Le Mans

Question type: Maintenance & Repair

1971 Pontiac Lemans 350. With headlights off, all
lights and turn signals work. Headlights on, no
turn signals work. When right turn signal on, I hear
clicking from the dash, but no exterior blinking and
left tail light is out. When left turn signal on, no
blinking or clicking or anything.  

3 Answers


Check all of your lights grounds and sockets, on a rig this old rust and corrosion plays a big factor in circuit failures.


If you have an aftermarket stereo, check the ground straps. The instrument cluster was originally grounded through the radio ground straps. HTH. -Jim


You may have a bad turn signal sending unit.

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