Low Beam Doesn't Work, High Beam Does??
Thread Starter
Instructor
Joined: Apr 2013
Posts: 232
Likes: 1
Low Beam Doesn't Work, High Beam Does??
Hi, all! I have a 69, and I thought my left low beam headlight had gone out, so I was going to replace it with a nice new set of repro T3s. However, when I turned on my high beams, the bulb seems to be working. When I turn off the brights, it doesn't. Any suggestions on what might be causing this? I don't want to drop the $ for new bulbs if that is not the problem.
On a separate but related note, how bright is the instrument display on YOUR 69? Mine seems dim, but I've never had an older car before, so maybe that's just how they are. Any thoughts? Thanks in advance, forum!
On a separate but related note, how bright is the instrument display on YOUR 69? Mine seems dim, but I've never had an older car before, so maybe that's just how they are. Any thoughts? Thanks in advance, forum!
Melting Slicks
Joined: May 2012
Posts: 2,192
Likes: 343
From: Allenton Wisconsin
it seems that the RH bulb works to your satisfaction, therefore indicating that the low beam filament or lack of voltage to same isn't there. remove bulb, test for voltage or just replace the bulb. halogens are a lot brighter you'd like them. oh ya rotate the headlight switch **** to increase or decrease dash light.
Racer
Joined: Nov 2006
Posts: 357
Likes: 8
From: Champaign Urbana IL
I have the same problem, but its my high beams that don't work. They worked fine then one day they both stopped working. I'm 90% positive that the problem is with the dimmer switch that changes the current between the high beams and low beams. For me (1977) its located underneath the steering cable and can be replaced fairly easily. Its also fairly cheap, $20.
Racer
Joined: Apr 2011
Posts: 471
Likes: 3
Hi, I have the same problem as JD. How can I understand what type of bulb I have? Also... I was looking on where to find replacement and popular websites have low beam and high beam bulbs... Are the low beam ones the right replacement? Thanks
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Most have a model number ID stamp on the back.
I'm not sure what you mean. Right as in correct or right as in position? The outer lights are low beam and are two element lamps. The inners are the high beams and have one element.
...Are the low beam ones the right replacement?...
Racer
Joined: Apr 2011
Posts: 471
Likes: 3
Thanks
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Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Low beam bulbs have 2 filaments: one for lo beam and one for hi beam. Odds are that the lo beam filament is burned out. But, you could swap the RH and LH low beam lamps to check for sure.