Directional issues

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Sep 28, 2015 | 03:02 PM

56fordguy

Thread Starter

Cross-Country

Joined: Sep 2011

Posts: 91

Likes: 6

Directional issues

Hi I have a 75 f100. I am getting closer to finishing my project. Well I have all new bulbs and flashers. I can't get my blinkers to blink. I can make them blink manually when I move the handle on the steering column . When I turn the headlights on I can't even get them to blink. I'm lost. Please give me some suggestions . Thanks Mike

Sep 28, 2015 | 04:34 PM

HoustonDave

Fleet Mechanic

Joined: Sep 2014

Posts: 1,626

Likes: 78

From: NE Texas

first guess - bad flasher grounds. Second guess - did you maybe replace the bulbs with LEDs? When you switch to low-resistance LEDs there isn't enough resistance for a conventional flasher to make the bulbs flash, so you have to change to a flasher which cuts off and on electronically no matter what the resistance of the bulbs is.

Sep 28, 2015 | 04:55 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 787

From: Simi Valley, CA

Quote:

Originally Posted by 56fordguy

TWO different flashers:

T/S flasher plugs into the back of the instrument cluster.

H/D 4 way flasher (has a louder CLICK) nestles into a bracket that's retained to the backside of the dash w/a screw.

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Oct 2, 2015 | 06:49 AM

crazedfox

More Turbo

Joined: Aug 2008

Posts: 531

Likes: 4

From: LaGrange

Humm, 40 year old turn signal switch.
Try replacing it. After a looong term in service, they do tend to wear out.
Usually is just that simple...
-
Should problem persist after new turn-signal switch install, drop back in & we'll find & fix it.