[red_rider52]

Hello, I have a problem with my head lights on my 67 firebird, I have no dims and no marking lights in the front, but when I put the brights on all 4 head lights come on in the front, but still no marking lights. Would this be my light switch or my dimmer switch ? any help would be great

[stuartc]

check the bulbs see if they are ok then check the fuse,s are ok then check then replace the switch job done
see ya stuart

[docvette]

Doc here,

Sounds like errant grounds in the front clip...To me..

Ground the front fenders (each one ) with a jumper cable back to the battery and see if the lights come on..

If so you need to upgrade your ground system.

Add two 10 gauge wires from each fender and run it from the to the main ground bolt on the engine block, add a third wire to the firewall, then get a battery cable with ring terminals on both ends and bolt it to the main ground at or near the starter, to the frame.

Use star washers, and Burnish off all paint and grease.

Does this car have the big button on the floor for high beams or is it a column switch?

Your normal light switch should be good as it is turning on the high beams, however the wire going to low beam may be broken or burned off.

You need to look at that plug and switch, Clean both with a good electrical cleaner, and ohm the terminals out that put power on the low beam lighting.be sure you have continuity in "On" to the lows..

Except for the marker lights your not going to find a fuse for the headlights, ( unless an aftermarket relay was installed) What you might find, Is a circuit breaker mounted IN the light switch itself....

The marker lights should draw power in parallel with the Park / turn signal circuit, If those functions work, fuse should be good, but check to be sure.

Most likely it's bad grounding, and I'll bet there is other problems you just haven't run across yet going on too, like charging issues, other lighting issues, the like..Check ground first...

Doc

[Scotts67]

I agree with the above, probably bad ground, you can look at your marker lights having two wires comming from each. You have a hot and a ground. With light switch on hook up a voltmeter and be sure you have 12+ volts going to one of the two wires (mine are same color on 67 Camaro) and if you do (hopefully) select the other wire that would be ground and just run a jumper to ground this wire to the frame or other local location. Mine has the hot from the main wiring harness and the ground goes to a screw in the innner fenderwell on either side. I assume you have the step on high beam selector on the floor, so you may want to pull up the carpet and check these connections as well (mine were a bit rusty) and unplug one-by-one and clean the contacts with a bit of sand paper. Replace the 3 push on connectors if necessary. You should be able to unplug the headlight plugs from the well by the radiator and test for 12+ volts to the wiring there as well. If still lost a new headlight switch should only run you about $12.99. Good luck.

[red_rider52]

hey thanks guys, It is a switch on the floor for the hi and lows, and the turn singles work just no marking lights. I really hate electrical so any help is great I just have to crack down and do it. thanks again always great help from this site.