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Q: additional wiring on 2006 Nissan Quest

how to get additional power wire through the firewall on 2006 Nissan Quest without drilling?
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Find a spot where existing wire is already going through into the cabin and add the new wire to it. You want to make sure the wire is insulated from contacting any metal that is sharp and will wear through the wire insulation and cause a short circuit. Try to add the new wiring into the existing wiring harness sheathing.
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