SOLVED - Centech - No T/S

[jeffncs]

New Centech harness. Everything works except the t/signals (none work)
Brake lights - bingo
Parking lights - perfect
E-flashers- heck yes!

LEDs all around. Standard flasher unit works perfectly for the e-flashers. Multiple flasher units for turn signals and no love (both standard and the LED ones).

One note on the flasher - my circuit tested light up the LED ones both spade terminals when the flasher is plugged in.

Grounds all around are tight and connected.

Ignition in “on” gives me a hot accessory lug.

Fuses are all good along with the wires on the rear of the fuse panel.

What am I missing?

Thanks in advance!

 

[DirtDonk]

I know you’ve tried multiple flashers already, but have you tried swapping the known-good four-way flasher into the turn signal location just to see what happens?
With the flasher unplugged, you have power only on one wire. Correct?
Original turn signal switch, or replacement?

Happen to have a spare bulb and socket hanging around? I can imagine creating a test rig with one wire for ground, one wire attached to the output side of the flasher unit. Power connected to the other.
When you ground the wire, if it doesn’t flash, there’s a problem with the flasher (or bulb).
If it does flash, then the problem probably lies in the turn signal switch or column wiring.

Hazard switch in the column, or on the dash?

 

[jeffncs]

I know you’ve tried multiple flashers already, but have you tried swapping the known-good four-way flasher into the turn signal location just to see what happens?
With the flasher unplugged, you have power only on one wire. Correct?
Original turn signal switch, or replacement?

Happen to have a spare bulb and socket hanging around? I can imagine creating a test rig with one wire for ground, one wire attached to the output side of the flasher unit. Power connected to the other.
When you ground the wire, if it doesn’t flash, there’s a problem with the flasher (or bulb).
If it does flash, then the problem probably lies in the turn signal switch or column wiring.

Hazard switch in the column, or on the dash?

Great questions.

Known good flasher - yes, tried that with no luck.

I’ll test the plug for power at both female spades.

I just installed a new t/s switch as I figured the previous one was bad. No change.

I sort have the LED front lights rigged up like that except at the front. I’ll see if I have a spare around to test right at the flasher.

Hazard switch is on the column. I’ve mapped and remapped the flat wiring connector. I’ll check again…maybe I’m missing something.

Thanks,

 

[NGABronco]

Not on an EB but my turn signal LEDs required the dash indicator lamps to be wired up??? Took me 2 weeks to figure the out!!!

 

[Slowleak]

LED flashers, and most bulbs, are polarity sensitive. You may need to reverse the wires on the led flasher. They sell adapters for that or you can use some pigtails.
Mine did the same thing as yours. The e-flashers worked with the standard flasher since all 4 led bulbs draw enough power to trip it. The turn signals bulbs would not so I got an led flasher and had to flip the wires.

 

[jeffncs]

LED flashers, and most bulbs, are polarity sensitive. You may need to reverse the wires on the led flasher. They sell adapters for that or you can use some pigtails.
Mine did the same thing as yours. The e-flashers worked with the standard flasher since all 4 led bulbs draw enough power to trip it. The turn signals bulbs would not so I got a led flasher and had to flip the wires.

No luck…. Any other suggestions?

 

[jeffncs]

Not on an EB but my turn signal LEDs required the dash indicator lamps to be wired up??? Took me 2 weeks to figure the out!!!

Dash indicators all worked and work. T/s indicator even work with the e-flashers but no luck at all for the turn signals.

 

[Slowleak]

No luck…. Any other suggestions?

Have you tried it with incandescent bulbs? That might help isolate the issue.

 

[jeffncs]

Just added in some non-LED 1157s to the rear housings. If I add a little resistance to the flasher, it’ll click but no lights.

Odd.

 

[jeffncs]

Have you tried it with incandescent bulbs? That might help isolate the issue.

I’m going to get some bulbs and pigtails in the front tomorrow. Then it’ll be incandescent front and rear.

Frustrating!

 

[jeffncs]

SOLVED - something under the switch was pinching wires. All working as expected now!

Thanks to all for the ideas and support!