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I have mounted some auxillery lights on my 2002 civic but can 't find anywhere to feed the wiring from the engine compartment to the interior. Can anyone help with this?

 
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You can punch through the firewall where the main harness goes through. I believe its on the passenger side.

Use a coat hanger to help fish the wires through after you cut/slit a hole in the rubber grommet.

 
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I don't think its as easy as that. I removed a couple panels and glovebox but there is no easy access.

 
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The main harness grommet is in the passenger foot well, behind the carpet and slightly up.
You'll have to remove the big plastic panel that blocks access.

Another way is to drill through the driver side firewall.

 
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It's easy to get too. Just need to remove the one panel and pull back the carpet like Kenny said.

Random pic from Google. You can see the grommet, you just need to make a slit and push a coat hanger through. Then attach your wires with tape and pull through.

 
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I think its worth noting that while you can easily go though the main harness grommet, with a little work you can create your own hole through the firewall, provided you seal the hole and use a grommet or an equivalent.