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Amp or Inverter Wire Penetration
IF THE IMAGE IS TOO SMALL, click it.
Instead of drilling a hole in the steel firewall to pull a heavy-gauge high-current wire through, simply re-use the factory grommet in the HVAC box.
1) Spread the wires in the grommet gently with a long Phillips screwdriver to make room for the new addition(s).
2) Or (for more or larger wires) puncture the grommet.
3) This penetration brings the wires through the large firewall opening for the recirculate (cabin) air for the HVAC system beside the right kick panel (lower A-pillar).
4) A soft Copper tube may be used as a needle to thread the new wire(s) through the grommet.
5) The tube should be close to the size of the new wire(s).
6) Route the wire under the threshold for installations anywhere behind the front seats. Follow the factory harness routing when possible.
7) DO NOT connect the fuse until the wire is routed and insulated or connected at the far end, so it doesn't short to ground. For more protection, route the new wire through the fender, which is also a good place to keep the fuse holder away from damage.
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