Turn signal help

[drewbert41]

I rewired the whole truck and nothing in the steering column was working.

I replaced the turn signal switch and now my hazards work perfectly but, my turn signals do not. I believe all wires are hooked up correctly and I have several new clean grounds. (Battery to block, front clip to frame, cab to frame, bed to frame, block to frame, and I also have grounded my instrument panel.)

The guy I got the truck from said the turn signals did not work for him but, I have since rewired. The hazards work fine so I am thinking that tells me that the flasher and bulbs are ok.

Any advice appreciated.

[ETsC10]

Moving you to the electrical gurus
Good Luck!

[drewbert41]

Anyone know where to start?

[ray_mcavoy]

Originally Posted by drewbert41

The guy I got the truck from said the turn signals did not work for him but, I have since rewired. The hazards work fine so I am thinking that tells me that the flasher and bulbs are ok.

You're close!

The fact that the hazard flashers work does tell you that all the bulbs and their associated wiring & grounds are okay.

However, the hazards use a different flasher than the turn signals. So you could still be dealing with a bad turn signal flasher.

[_Ogre]

not sure what truck your working on; the 41 in your sig could be your truck, age or yr of birth
below is the wiring diagram for a gm column and most aftermarkets harnesses use gm color code

do your brake lights work? i'll assume no (ass-u-me)
do your running lights work?

get out your multimeter and start testing
with brake pedal pushed there should be 12v+ power on WHT
BRN and PUR should also be 12v+ hot at all times (the flashers open under load)

use a 12v+ jumper and hook up Lt BLU, Dk BLU, YLW and GRN to test the wiring to each corner of your truck
confirm each light is working and the wiring is good

if you have power at the 3 hot wires and lights at each corner of your truck
then look at how the switch is connected to each wire
your brake lights and rear turn signals use the same bulb and filament

do some testing and write back

[drewbert41]

Originally Posted by ray_mcavoy

You're close!

The fact that the hazard flashers work does tell you that all the bulbs and their associated wiring & grounds are okay.

However, the hazards use a different flasher than the turn signals. So you could still be dealing with a bad turn signal flasher.

Both flashers are brand new. Came with the harness from rebel wire. I suppose one could be bad or have been damaged before install. I am going to try and switch the flashers and see if that does anything for me.

[drewbert41]

My truck is a 1968 c10

My brake lights are working. This information will be very useful if I need to do more advanced troubleshooting.

Thanks.

[_Ogre]

if your hazard and brake lights work, i'd try swapping flashers first.
new parts don't guarantee working parts
manufacturers use the cheapest junk they can in universal harnesses to match other vendor prices

[drewbert41]

It was the flasher. U guys rock!

[drewbert41]

They are sending me a replacement. Problem solved.