Run amplifier power wire like a pro! – How to install through firewall

When installing an amplifier for a car audio system we need to run the power wire through the firewall of the car. What hole do we run the power wire through? How can we make a firewall hole for the positive amplifier cable? Let’s take a look at the best practices!

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🔨 Tools and Materials:
✔️ Grommet hole cutting stamp:
✔️ Step Drill (Budget):
✔️ Step Drill (Best):
✔️ Large Wire Grommets:

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