MoparFins

Techical Discussions => Tech- - ELECTRICAL => Topic started by: Ken on April 09, 2012, 07:14:15 PM

Title: Headlamps cutting out
Post by: Ken on April 09, 2012, 07:14:15 PM
This has been a problem that is getting worse, after I bypassed the ammeter, and today I threw a set of relays on the low and high beam circuits.

Do a quick road test, and it is like nothing has changed (http://www.moparfins.com/forum/smileys/smiley11.gif)

Looks like I'll be tearing into the dash to change out the switch with its soldered harness, and make the change to a new switch that has blades at the back instead of a harness.

This sucks...I just had to vent...btw howdy y'all, ltnc (http://www.moparfins.com/forum/smileys/smiley24.gif)



Title: Headlamps cutting out
Post by: Guests on April 09, 2012, 07:47:28 PM
As I recall, there is also a ground wire up in the front somewhere around the radiator support, and then check the harness as it goes back to the bulkhead connection, I had one that is under the battery tray and grease and oil over the years had it all funky, was doing the same thing. This way you can also reconnect the ammeter, and it is a whole lot easier than pulling the dash for starters.
Title: Headlamps cutting out
Post by: Steve on April 10, 2012, 02:29:08 AM


Check the bulkhead connector and make sure it's seated.  Headlight switch.  They use a common ground on the rad support.  Seen that several times on that vintage
Title: Headlamps cutting out
Post by: Brian on April 10, 2012, 05:32:01 PM
I had this on my 70 Sport Fury...or something similar.  I couldn't run high beams for very long of the switch would get so hot it would start tripping the circuit.  Also check the high/low beam switch on the floor...since everything for the headlights run through that one.  Make sure all the connections are clean, and it has a good ground.





Title: Headlamps cutting out
Post by: Snotty on April 12, 2012, 09:48:42 AM
I agree with Brian - check the floor switch.  I have the same problem with my Newport.  I have a new switch but have not put it in yet.  D'oh!
Title: Headlamps cutting out
Post by: Steve on April 12, 2012, 06:23:25 PM


If the dash lights stay lit, maybe.
Title: Headlamps cutting out
Post by: Snotty on April 16, 2012, 11:04:46 AM
Not just the dash lights Steve, but all lights.  If the only thing gong out is his headlights there is probably no greater problem existing.
Title: Headlamps cutting out
Post by: Jason Goldsack on April 30, 2012, 03:50:35 AM
I know once I swapped out the breaker voltage regulator for an electronic one my high beams don't trip out the lights anymore. Before that I could only go about 10 minutes on high beams before the lights would cut out.


Title: Headlamps cutting out
Post by: Steve on April 30, 2012, 06:09:32 AM


Since they are so hard to find, I would relay everything.  head lights, park lights, HB's and take the load off the breaker
Title: Headlamps cutting out
Post by: Ken on May 02, 2012, 09:17:37 PM

Well, I dug into the dash today after work (just what I wasn't looking forward to doing), got everything back together roughly 4 hours later...hey, I'm using mostly hand tools, and squeezing under the dash/steering column ain't the easiest thing for me to do (Scotty knows this to be true).

Undid the ammeter bypass and hooked everything back up per how it left the factory, then did a test letting the car idle with the lights on.  It seemed to be OK, but as I was heading out of the complex the flickering came back (http://www.moparfins.com/forum/smileys/smiley7.gif)

Drove back to my stall, headlamps still flickering, and so I futzed with the switch to no avail.  For some reason I thought checking out the flasher system might be worth some giggles since it went awol too...lo and behold, they started working...a little balky with the left side coming on, then both sides after juggling that switch.

This encouraged me, and so I figured I would do a night time road test (http://www.moparfins.com/forum/smileys/smiley8.gif)

The car behaved pretty well for 30 minutes of surface street driving, and I thought I fixed the gremlins, but after getting back to the carport the flickering started again.

There might be a partial short via the flashers, and the other items that aren't working are both cigar lighters (in dash and in the back of the buddy seat) and the clock, which went kaput last year (it's pretty neat to see a clock suddenly operating in warp-speed mode where it's spinning the minute hand at 2 to 3 rotations a second!) (http://www.moparfins.com/forum/smileys/smiley21.gif)

So as near as I can tell, my switch is crapping out, and I don't have the time to chase electrons like I used to when my work schedule allowed me to get off at 2:30pm instead of 5pm.

(http://www.moparfins.com/forum/smileys/smiley1.gif) (http://www.moparfins.com/forum/smileys/smiley32.gif)

Not enough $$ to throw relays on everything, Steve....I'm an OPGW, remember? (http://www.moparfins.com/forum/smileys/smiley6.gif)
(http://www.moparfins.com/forum/smileys/smiley6.gif)


Moesy2012-05-03 02:19:41
Title: Headlamps cutting out
Post by: Steve on May 03, 2012, 07:38:19 AM


I still didn't read that all the lights were going out, or just the headlights
Title: Headlamps cutting out
Post by: Ken on May 03, 2012, 01:58:11 PM
Just the headlights, but the dash will sometimes go out after a while


Title: Headlamps cutting out
Post by: Steve on May 03, 2012, 02:25:51 PM


That;s the circuit breakers in the switch.  Is the wiring on this car all bastardized?
Title: Headlamps cutting out
Post by: Ken on May 04, 2012, 10:06:39 PM
Bastardized in what way? (http://www.moparfins.com/forum/smileys/smiley27.gif)  I have replaced the power feed through the bulkhead, and I didn't do the wiring for the electronic ignition or the electric choke on the AFB, but I DID do the relays for the low and high beams.


Title: Headlamps cutting out
Post by: Steve on May 05, 2012, 08:05:46 AM


I'm betting the circuit breaker in the switch is done
Title: Headlamps cutting out
Post by: Ken on May 05, 2012, 06:03:56 PM
If anyone before me did something to the wiring, it was to the harness in the engine bay near the battery, otherwise, I think everything was OK after having the body and paint work done in '08.

Lights are definitely brighter w/ the relays.

I'm thinking you might be right about the switch, although the thought of the voltage regulator being the problem came up in conversation with someone else I saw last night.
I have replaced the original (afaik) alternator which was a 47 amp unit with a reman 60 amp unit a few years ago, and I also swapped out the regulator w/ one that has an ic which I assumed would be able to handle the additional amperage



Title: Headlamps cutting out
Post by: Steve on May 05, 2012, 08:43:25 PM


If there is corrosion, soak it in vinigar, then rinse it with a mile dish soap solution.  Put some vasoline on it and put it back together.  Be sure all the spades are pushed through.  Sometimes they slip into the connector
Title: Headlamps cutting out
Post by: Ken on May 10, 2012, 08:15:50 PM
Besides having the light issue (still think it's the switch itself, after checking out the Imp forum) tonight I had the wonderful experience of having my starter fully engaged (even with the key in my pocket!), and so I had to drive home with the racket and the smell of burnt oil.

The car finally shut off when I turned off the ignition when I got back to my stall, but that starter got hot, and I'm sure the connector is close to being melted if not already so.

That Denso starter was the first modification I had done to the car 6 years ago (http://www.moparfins.com/forum/smileys/smiley7.gif)

At least I'll get some exercise walking to work (http://www.moparfins.com/forum/smileys/smiley11.gif)