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| | | | Joined: Jul 2012 Posts: 36 New Guy | | New Guy Joined: Jul 2012 Posts: 36 | I suddenly don't have brights. I have changed the front wiring harness and both headlights on my 66 C10. Still no brights. When I hit the switch, the lights simply go off.
Is there supposed to be an indicator in the dash? If there is, it isn't coming on either. Brights worked when I got it, but not now. Any ideas/ | | | | | Joined: Aug 2007 Posts: 462 'Bolter | | 'Bolter Joined: Aug 2007 Posts: 462 | new switch and or check all your grounds | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | I think ground is local, one for each side. Hot for brights comes from the dimmer switch on floor. That hot wire is split up front to run from one side to the other. Get a schematic. Most important to test the three pins on dimmer, one is hot from headlight switch and should energize each of the others upon clicking. If you don't have that and just have the hot from switch, you can touch it to one of the others, one at a time and see if brights come on. If no hot to dimmer, follow back to headlight switch/fuses/connectors/wiring. If dimmer operates well, check hot at headlight connectors. AND, as said ,the grounds at each headlight. That ground is either a inner fender or radiator support spot. Did you buy a front harness or make one? "When I hit the switch"....dimmer switch or headlight switch? The high beam indicator gets it's juice from the dimmer also, not affected by headlight ground, so probably the dimmer bad/wired wrong or lack of power from HL switch.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Jul 2012 Posts: 36 New Guy | | New Guy Joined: Jul 2012 Posts: 36 | Thanks Bartamos. I will check at the switch.
Update, headlights work. The headlights go out when I hit the dimmer switch.
I bought the harness from Ecklers. The brights did not work before I switched the harness. All the wiring is a ratty mess, so I didn't think it would hurt to start there since I was going to replace them anyway.
The ground for each headlight is actually on the back side of the grill. I'll check the dimmer, then the wires inside. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | That [problem is almost always in the dimmer switch. It ia in a bad invironment. The terms. & connector get corroded. If the connecter is bad a replacement pigtail is available at any parts store.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jul 2012 Posts: 36 New Guy | | New Guy Joined: Jul 2012 Posts: 36 | Sorry for the late reply. The dimmer switch took care of the brights. I totally demolished the plug trying to remove it from the old switch, but managed to get it back together enough to hook it up to the new one. It will keep for now, and I will fix that later.
Thanks for the tip. Pretty cheap fix. | | |
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