First Time Sub Install: Need Wiring Help!

[mjlorenzo 10+ year member]

Hey this is my first sub/amp install and I need help wiring the power cable thru the firewall. I have a 2002 Honda Civic LX and I was wondering if someone more knowledgeable about Hondas could tell me where either there's a pre-existing hole in the firewall large enough to route an 8ga power cable thru or where a good place to drill one would be. The battery is on the passenger side of the car so I'd prefer to run it thru the firewall on the same side.

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[chase007 10+ year member]

Just remember don't run a power wire next to a rca cable, it can cause interference. Get 1/0 Wireing its about 60$...Do a big 3 which is new cabling just google BIG 3 its

alt to bat

neg bat to chasis

Engine block to chasis

Just drill a hole on the side of the bat but run the rca cable on the other side of the car

 

[pentavolvo 10+ year member]

pull the battery out then unbolt battery tray and there is an oem grommet u can go through if i recall properly

 

[Enellz 10+ year member]

Just remember don't run a power wire next to a rca cable, it can cause interference. Get 1/0 Wireing its about 60$...Do a big 3 which is new cabling just google BIG 3 its
alt to bat

neg bat to chasis

Engine block to chasis

Just drill a hole on the side of the bat but run the rca cable on the other side of the car

I wouldnt do it too risky...

 

[boom24 10+ year member]

easyest way is to just drill a hole and put a grommit in..

 

[mjlorenzo 10+ year member]

pull the battery out then unbolt battery tray and there is an oem grommet u can go through if i recall properly

I'll try that first cuz it seems easiest. But if I were to drill thru the firewall, is there any particular place that would be best? I'm assuming maybe near the floor of the passenger seat.

 

[dredey 10+ year member]

Just remember don't run a power wire next to a rca cable, it can cause interference. Get 1/0 Wireing its about 60$...Do a big 3 which is new cabling just google BIG 3 its
alt to bat

neg bat to chasis

Engine block to chasis

Just drill a hole on the side of the bat but run the rca cable on the other side of the car

is the 1/0 wiring the best way to go, no matte what kinda system u have?

oh and sorry to threadjack lol

 

[vellocet 10+ year member]

Look on a honda forum, they will know exactly where to drill.