S5 Turbo 2 year 1989 my Turn signals died

Pete_89T2 · 08-06-2011, 07:55 AM

Probably the CPU under the driver's side kick panel as Ted said. These things are known for poor solder joints; resoldering the connector to PC board joints (or just swaping in a known good CPU) should fix it for you.

BTW, I know the OP said the bulbs are good, but did you check if all the bulbs flash when you flip on the hazard flashers? Since the turn signals & hazard flashers share the same switching circuit to blink the lights within the CPU, that's a quick & easy way to confirm your CPU is the problem.

08-06-2011, 07:55 AM	#3
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 16	Probably the CPU under the driver's side kick panel as Ted said. These things are known for poor solder joints; resoldering the connector to PC board joints (or just swaping in a known good CPU) should fix it for you. BTW, I know the OP said the bulbs are good, but did you check if all the bulbs flash when you flip on the hazard flashers? Since the turn signals & hazard flashers share the same switching circuit to blink the lights within the CPU, that's a quick & easy way to confirm your CPU is the problem.