 Headlight Issues, Only one per side works (H/L) |
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| MBowman325 |
 May 14 2009, 09:07 PM
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#1
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Member  Group: Members Posts: 465 Joined: 14-July 05 From: Oklahoma City, OK Member No.: 4,413 Region Association: Southwest Region  |
I've been having issues with my headlights and I'd made the assumption that a filament was burned out and decided to pull the trigger on some H4s
They came in today and after doing the more pressing stuff (o-ring for angle drive and functional rear shocks) I stuck these on. Low and behold - they're wonderfully bright compared to the old ones but... On low, only the left one lights up and on high only the right one lights up.. I've been looking for my meter (I swear I saw it the other day) to test for things.. Once I find it I'll be able to dig deeper. If I can't find it I may use one of the old headlights as a test light... That said, does anyone have any suggestions? The fuses all look good as well. Thanks! |
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| MBowman325 |
May 14 2009, 10:24 PM
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Member Group: Members Posts: 465 Joined: 14-July 05 From: Oklahoma City, OK Member No.: 4,413 Region Association: Southwest Region |
While none of the fuses looked bad, I went ahead and replaced the first 6. Now I'm just to the point where the left high doesn't work...
Regardless, even on low, these (Hella H4) are putting out more than the old sealed beams did on high. (IMG:style_emoticons/default/smile.gif) |
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| 70Sixter |
May 22 2009, 01:45 PM
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#3
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Member Group: Members Posts: 422 Joined: 3-August 04 From: Surf City, NC Member No.: 2,444 Region Association: South East States |
If they are high power (80-100W) you should put a relay to protect the wiring to the switch and the switch. The current draw can arc across the switch contacts.
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| MBowman325 |
May 22 2009, 11:15 PM
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#4
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Member Group: Members Posts: 465 Joined: 14-July 05 From: Oklahoma City, OK Member No.: 4,413 Region Association: Southwest Region |
They're the lower power (55W) though I plan on eventually adding in the relays for it. When I went that route on my Monte (and Impala) the output was noticeable with the direct feed versus the drop suffered running through the switch.
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| ClayPerrine |
May 22 2009, 11:33 PM
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#5
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Life's been good to me so far..... Group: Admin Posts: 15,443 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille 
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For this, get a test light at the FLAPS.
Then start at the fuse block. With the high beams on, take the first 2 fuses out of the fuse block (starting from the left). Then test the contacts with a test light. You should have power to (IIRC) the bottom contacts. Repeat for fuses 3 and 4 with the low beams on. If you have power, then clean the fuse box contacts and replace the fuses. IF that doesn't fix it, pull the headlights and test the white wires with the high beams, and the yellow wires with the low beams. If it doesn't have power to the fuse block, pull the fuse block down and check the back of it for bad or corroded connections. |
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