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Old Jun 3, 2015 | 12:27 PM
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Turn signal dash lights

The turn signal dash lights both stopped working. After reading several of the commentaries on dash lights, I tried the emergency flashers. Both lights on the front work but the rear lights don't. Turn signals on front and rear work with the light lever but dash does not.
Need help!
 
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Old Jun 3, 2015 | 01:24 PM
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Stopped working indicates they used to (since you've owned the truck)? Have you done any projects recently that involved wiring/electrical or the instrument cluster or steering column that could've inadvertently impacted them? (I.e. what changed to make them stop?) Did anything else on the cluster also stop working (other lights, gauges, etc.)?


When you say the hazards only work in front, you don't mention whether the dash indicators also work or not?
 
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Old Jun 3, 2015 | 02:58 PM
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The hazard lights flash in the front but not in the rear or on the dash. I can hear the relay. I have owned the truck since '74. I had to replace the little device on the drive column that initiates the backup lights. Had to drop the drive column and I did have the dash out. I just have not been able to grasp why the hazard lights do not work in the rear but work in front and dash does not. I'm just missing something in the process.
 
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Old Jun 3, 2015 | 04:15 PM
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I bet it was the neutral safety you replaced that only effects the backups as far as lights go.

Do you have a ground on your column? It could be a dirty or bad one. Also check the turn signal switch.
 
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Old Jun 3, 2015 | 06:52 PM
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It wasn't the switch I replaced but the metal spike that sticks out from the column. What a bear. There was probably a special tool to snap it in place but I had to do it the old fashion way.
 
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Old Jun 3, 2015 | 08:45 PM
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Originally Posted by SeaCarr
The turn signal dash lights both stopped working. After reading several of the commentaries on dash lights, I tried the emergency flashers. Both lights on the front work but the rear lights don't. Turn signals on front and rear work with the light lever but dash does not.
TWO different flashers. T/S flasher plugs into the back of the instrument cluster.

Heavy duty 4 way emergency flasher (looks the same but has a louder CLICK), nestles into a bracket that is retained to the backside of the dash w/a screw.

4 way flasher can be substituted for the T/S flasher (and was with trailer tow and people that were deaf). But, the T/S flasher is a "weak sister" should not be used in place of the 4 way flasher.
 
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Old Jun 3, 2015 | 10:00 PM
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Originally Posted by SeaCarr
It wasn't the switch I replaced but the metal spike that sticks out from the column. What a bear. There was probably a special tool to snap it in place but I had to do it the old fashion way.
Yeah, that lever arm is a pain to deal with. I did mine in place, without dropping the column, but it was really hard to tell what I was doing since I couldn't really see and get my hands up there at the same time.

I suspect you probably have a wiring issue somewhere you disconnected things - either in the harness that goes into the column or at the back of the instrument cluster. I'd check the connectors first, then move on from there with a multimeter, following the wiring diagrams:

1973-1979 Ford Truck Wiring Diagrams & Schematics - FORDification.net
 
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