Author Topic: Brights Not Working  (Read 352 times)

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Brights Not Working
« on: August 01, 2019, 07:03:21 PM »
1979 Trans Am - My High Beams are not working. Bulbs are OK. Is there a relay between the column mounted Hi-Low switch and the head lights? Any help is much appreciated.

Thanks!

b_hill_86

  • Active Forum Member
  • *
  • Posts: 345
Re: Brights Not Working
« Reply #1 on: August 01, 2019, 09:37:54 PM »
Don’t THINK there is a relay. Not on my 77 anyway. But I have the floor dimmer switch and I believe you have it on the turn signal stalk no? Could just be a bad switch. I know the floor switches are a common problem. Could start there.
-Brian-

1977 Trans Am 400 4 speed

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #2 on: August 02, 2019, 06:55:40 AM »
Thanks Brian!

Jack

  • Oracle Forum Member
  • *
  • Posts: 10423
  • 1971 Esprit TA Clone W72 1972 Formula 68 350 HO
Re: Brights Not Working
« Reply #3 on: August 02, 2019, 07:04:30 AM »
X2 it's either the switch or a wiring issue near the lamp.




Regards, Jack

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #4 on: August 02, 2019, 07:22:53 AM »
Thanks Jack!

Re: Brights Not Working
« Reply #4 on: August 02, 2019, 07:22:53 AM »

tz6p06

  • Active Forum Member
  • *
  • Posts: 34
Re: Brights Not Working
« Reply #5 on: August 02, 2019, 12:44:38 PM »
I had the same issue and replacing the switch on the floor fixed it.  It was a nice and cheap fix!

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #6 on: August 02, 2019, 01:29:24 PM »
Wish my switch was on the floor!

Jack

  • Oracle Forum Member
  • *
  • Posts: 10423
  • 1971 Esprit TA Clone W72 1972 Formula 68 350 HO
Re: Brights Not Working
« Reply #7 on: August 02, 2019, 01:49:59 PM »
The high beam switch on the older cars is on the floor, you active by depressing the switch.




Regards, Jack

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #8 on: August 02, 2019, 02:03:26 PM »
Mine is on the column, way down under actuate by a rod on the column.

Grand73Am

  • Oracle Forum Member
  • *
  • Posts: 9861
Re: Brights Not Working
« Reply #9 on: August 03, 2019, 07:43:39 AM »
Mine is on the column, way down under actuate by a rod on the column.

You could get under the dash and manually push on the switch with your finger to see if it works. There is some adjustment of the switch. It has slotted holes where it mounts on the column, so you can loosen the screws that hold it and slide it up and down for the best adjustment with the rod and re-tighten. Make sure the rod hasn't fallen out of position in the center of the switch button too.
Steve F.

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #10 on: August 03, 2019, 07:49:13 AM »
Thanks Steve! I order a new switch. That sucker is in a tough spot to get too. I hope that rod doesn't come out of position up in the column.....

Grand73Am

  • Oracle Forum Member
  • *
  • Posts: 9861
Re: Brights Not Working
« Reply #11 on: August 03, 2019, 08:06:39 AM »
I hope that rod doesn't come out of position up in the column.....

I don't think that'll happen. I think it's secured enough up in the column. But, you could tape the rod while you change the switch to keep it in place to prevent that possibility. And make sure the rod is centered in the switch button when you put your new switch on.
Steve F.

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #12 on: August 04, 2019, 01:49:46 PM »
Thanks Steve!

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #13 on: August 06, 2019, 08:56:47 AM »
Steve, Do you know where that switch is located on the column? I can't seem to locate it. I have the Pontiac 78 service manual and the Pontiac 79 supplemental manual, but don't see and diagrams or procedures?
Thanks

Dan

Grand73Am

  • Oracle Forum Member
  • *
  • Posts: 9861
Re: Brights Not Working
« Reply #14 on: August 06, 2019, 09:24:17 AM »
Hi Dan. It's on the left side of the column just behind the large column mounting bracket. Held on by a 3/8 nut and a 5/16 hex screw. In the photo, you can see the nut at the top and the screw head at the bottom on the metal bracketry :

003 by grand73am, on Flickr
Steve F.

Re: Brights Not Working
« Reply #14 on: August 06, 2019, 09:24:17 AM »

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #15 on: August 06, 2019, 09:33:17 AM »
Thank You Steve!

Grand73Am

  • Oracle Forum Member
  • *
  • Posts: 9861
Re: Brights Not Working
« Reply #16 on: August 06, 2019, 09:40:36 AM »
You're welcome  :-) .
Steve F.

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #17 on: August 07, 2019, 02:01:20 PM »
This thing is kicking my butt. Can it be changed in place by crawling under the dash? There is a plastic heating duct that obstructs getting to it. There was one screw holding it in place, but I still couldn't get the duct out. Stumpted.......

firebirdparts

  • Jedi Council
  • Oracle Forum Member
  • *
  • Posts: 18464
Re: Brights Not Working
« Reply #18 on: August 07, 2019, 07:05:14 PM »
The duct will come out.  It's a little strange the way it's installed.  They did not use consistent locations for the screws and it seems like they used enormous screws.  There probably is a screw you can plainly see and another screw somewhere in the corner where it rolls up.

But yes, you can get to it, thankfully.  It's hanging on the side of the column rather than the top.

You could also click it and see if it works right.  Sometimes the real problem is that rod that is pushing on it isn't working right.  the linkage up at the turn signal stalk is pretty complicated.
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #19 on: August 07, 2019, 11:05:15 PM »
Thanks for the info!  I did click it and and there are no high beams. I just thought of something weird. Low beams work ok, but when you switch to high beams, all 4 headlights are are out. I think in high beam mode, all 4 should be on?

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #20 on: August 07, 2019, 11:10:44 PM »
I did only find one screw in the heater duct.

Grand73Am

  • Oracle Forum Member
  • *
  • Posts: 9861
Re: Brights Not Working
« Reply #21 on: August 08, 2019, 06:59:07 AM »
  I think in high beam mode, all 4 should be on?

Yes
Steve F.

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #22 on: August 08, 2019, 12:53:26 PM »
I got the duct out, unplugged the switch and connected it to the new switch. The switch is definitely bad. The new switch that I bought is not correct. The new switch has the mounting ears just above the switch itself whereas the original switch has a much larger mounting bracket and the the screws that hold it on are farther up on the column. geez........

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #23 on: August 09, 2019, 09:18:12 PM »
Do you have to lower the steering column?

FormTA

  • Oracle Forum Member
  • *
  • Posts: 3166
Re: Brights Not Working
« Reply #24 on: August 10, 2019, 04:47:39 AM »
You might but it's just 2 bolts so it wouldn't hurt to have the extra space to work.
79 Trans am 301 (work in progress) LS swap n progress
79 Formula 301 (Work in progress)
67 RS Camaro (Work in progress)
See the recurring theme???

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #25 on: August 11, 2019, 07:19:46 PM »
Something is weird. The two bolts are almost on top of the steering column. On the existing switch, from the edge of the plastic to the mounting ears, appears to be alot more than on the new switch. The new switch, the the mounting ears are very close to the plastic switch.

Wish I new how to post pics.....

Ghostrider

  • Active Forum Member
  • *
  • Posts: 57
Re: Brights Not Working
« Reply #26 on: August 11, 2019, 07:55:59 PM »
Does anyone know the OEM Part number?

Re: Brights Not Working
« Reply #26 on: August 11, 2019, 07:55:59 PM »
You can help support TAC!