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Old Apr 14, 2006 | 08:30 PM
  #1  
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Default Headlight Question

I have a problem with the headlights on my '75.
When Low beams are on only one side lights up. When The high beams are turned on the lowbeam on that side shuts off. Look at the little thing below for the example

OX--XX Low Beams
XO--OO High Beam

X is lights that are off
O is lights that are on.


Any Ideas?
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Old Apr 14, 2006 | 09:06 PM
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Bad grounding connection.
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Old Apr 15, 2006 | 12:04 AM
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yea, go thru the connectors for all 4 lamps, better yet, build and install the relay kit MAD recommends.
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Old Apr 15, 2006 | 02:23 AM
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Two bad bulbs.
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Old Apr 15, 2006 | 02:30 AM
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Got another question also - I want to replace the "headlights" so that I can see at night. I hear there is a kit that installs like normal headlights, but it's actually a housing that allows for a xenon buld to be inserted in the back. Way bright lights, stock appearance. Anyone heard of these?
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Old Apr 15, 2006 | 03:05 AM
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I just emailed Hella and Piaa about these mods - will let everyone know what the reply is. Anyone ever get a good aftermarket driving light hidden well enough to work, but not look like a bugger hanging outta my shark nose?
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Old Apr 15, 2006 | 03:28 AM
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Originally Posted by wombvette
Two bad bulbs.


Originally Posted by 71_454_Green_Machine
Got another question also - I want to replace the "headlights" so that I can see at night. I hear there is a kit that installs like normal headlights, but it's actually a housing that allows for a xenon buld to be inserted in the back. Way bright lights, stock appearance. Anyone heard of these?
That isn't anything new - They're just standard H4 and H1 5.75" headlight housings.
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Old Apr 15, 2006 | 08:21 AM
  #8  
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From: Hudson Falls, N.Y. 76 Vette Modified L-48
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Originally Posted by mrit
I have a problem with the headlights on my '75.
When Low beams are on only one side lights up. When The high beams are turned on the lowbeam on that side shuts off. Look at the little thing below for the example

OX--XX Low Beams
XO--OO High Beam

X is lights that are off
O is lights that are on.


Any Ideas?
Check the voltage at the plugs on all 4 lights...if voltage is correct, voltage when they are supposed to be on, no voltage when they should be off, check your ground side all 4 lights with an ohm meter, if that's correct, no resistence to ground, get 4 new headlites...
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Old Apr 15, 2006 | 12:54 PM
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Do you still have incandescents or have they been replaced with halogen lights? Besides what appears to be a problem with two bad bulbs, incandescents get dim over time. Halogen lights are a big improvement.
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Old Apr 15, 2006 | 01:05 PM
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From: Spring Texas
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Originally Posted by 71_454_Green_Machine
Got another question also - I want to replace the "headlights" so that I can see at night. I hear there is a kit that installs like normal headlights, but it's actually a housing that allows for a xenon buld to be inserted in the back. Way bright lights, stock appearance. Anyone heard of these?
I have searched several websites specializing in Xenon lighting and have not yet found anything more than halogen upgrades for c3 lights. If you find something, I would like to know about it.
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Old Apr 15, 2006 | 01:24 PM
  #11  
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From: Lake Stevens Wa
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Thanks for all the info Gonna check it out tonight
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