ConcoursMustang Forums

Non-Mustang Ford & Mercury Models => Mercury Models 1965-73 => Topic started by: Mark69Sportsroof on December 03, 2016, 11:28:37 PM

Title: Headlights not Working
Post by: Mark69Sportsroof on December 03, 2016, 11:28:37 PM
Hi Everyone, I have a new challenge with the 68 Mercury.  All my lights  work except for headlights and flashers.  I checked the wiring harness where the main harness connects to the headlight harness.  I used my test light and had power on one connectors.  But no headlights.  What should I do next?

All I did on the flashers was push the steering column flasher button in and now it is stuck.  Any guidance to my next step?

Still not to bad for sitting in the junk yard for 40 years.  Thanks Mark
Title: Re: Headlights not Working
Post by: Mark69Sportsroof on December 06, 2016, 11:04:05 PM
Any ideas from anyone?  Thanks Mark
Title: Re: Headlights not Working
Post by: Bob Gaines on December 06, 2016, 11:56:21 PM
Any ideas from anyone?  Thanks Mark
If it were a Mustang I would say check or substitute the headlight switch because that is where many faults are. I don't know about the 68 Mercury you are working on unless it is a Cougar in which case is basically the same as a Mustang.
Title: Re: Headlights not Working
Post by: max67 on December 07, 2016, 08:32:28 PM
Likely a bad connection at the dimmer switch.
Title: Re: Headlights not Working
Post by: Mark69Sportsroof on December 07, 2016, 11:29:36 PM
Thanks guys.  I just started to find a new headlight switch.  Not an easy task being a Mercury.  How would I check the dimmer switch to see if that's the problem?  Thanks Mark
Title: Re: Headlights not Working
Post by: max67 on December 08, 2016, 07:53:59 PM
Unplug the dimmer switch , pull the headlight switch all the way out, and check the wire plug from the dimmer for power.  Likely you will find some corrosion on the terminals inside the plug.
Title: Re: Headlights not Working
Post by: jwc66k on December 10, 2016, 12:39:10 AM
I just started to find a new headlight switch.  Not an easy task being a Mercury.  How would I check the dimmer switch to see if that's the problem? 
PM sent.
Jim
Title: Re: Headlights not Working
Post by: Mark69Sportsroof on December 10, 2016, 08:44:58 PM
Thanks everyone.  I tested the dimmer switch and no power.  Got one from my donor car.  Suddenly I have headlights.  Both low and high beams.  Thanks again for leading me in the right direction.  Mark