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Everything in Moderation
2006 CR-V EX, 5MT
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12,168 Posts
Bad ground ?
That is my guess. (Or a broken wire to a ground)

Current will try to complete a circuit. If a ground is missing, the current will go through any path that it can. (In this case, through the filaments of the other bulbs.)

You need to troubleshoot with a VOM meter.
 

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2006 CRV EX
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147 Posts
Discussion Starter · #5 ·
I changed the switch because the mechanic said that he would try that first before looking into faulty wiring. I'm going to leave the new one in. It feels much better - snaps great and easier to use by far.
 

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2006 CRV EX
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147 Posts
Discussion Starter · #6 ·
That is my guess. (Or a broken wire to a ground)

Current will try to complete a circuit. If a ground is missing, the current will go through any path that it can. (In this case, through the filaments of the other bulbs.)

You need to troubleshoot with a VOM meter.

OK, I have a volt meter. How would I troubleshoot it? Thanks
 

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2006 CRV EX
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147 Posts
Discussion Starter · #14 ·
Thanks for the fuses idea! The mechanic had checked those so it was out of my mind. I checked and one was blown. Replaced it 3 days ago and the headlights have been fine since!

My theory is that the old switch was blowing the fuse.

Thanks!
 
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