Mechanics

TURN SIGNAL MALFUNCTION,

1989 Ford F-150 • 179,000 miles

I am having an issue that is puzzling, My '89 F150's front right & left rear work when I attempt to us those, however the front left & right rear do not. What puzzles me is that the hazard, when engaged cause all 4 to flash. I flipped the hazard and turn signal fuses and nothing changed, so what gives?
Avatar
Tenn1987
November 1, 2013.




As each bulb has two filaments one is obviously blown in each bulb. U will need to replace them. Buy 2 1157 bulbs

Cadieman
Nov 2, 2013.
I tried this today and it made no difference.
AD

Tiny
Tenn1987
Nov 2, 2013.
In fairness I believe the last owner altered the fittings as they now accept 3157.

Tiny
Tenn1987
Nov 2, 2013.
Additionally, the left/right switch does not lock in position

Tiny
Tenn1987
Nov 2, 2013.
3157 is just a newer style bulb. You need to buy a test light. Check to see if your getting voltage at the sockets when the lever is pushed up or down. You will also need to replace the turn signal switch. But let's get the lights working now.

Cadieman
Nov 3, 2013.
If the socket fails the voltage tests what shall we do? I'll be testing it soon.

Tiny
Tenn1987
Nov 3, 2013.
They did, I'm tracing the wiring, almost have the rear located, as for the front. Not so easy.

Tiny
Tenn1987
Nov 3, 2013.
So you're not receiving a voltage signal to the wires right behind the socket?

Cadieman
Nov 4, 2013.
I've received input for parking and hazard lights but not turn, the black wire is receiving an overload error on multi-meter.

Tiny
Tenn1987
Nov 4, 2013.

AD