After a few weeks of searching and research, I've finally been able to install my Infinity BassLink subwoofer into my GE8!
Standard disclaimer: This is just how I did it. If you follow this and damage your car, I'm not responsible.
Stuff you'll want to have to do this install
- Mini Pry bar
- socket wrench
- 8 mm socket
- socket wrench extension
- masking tap
- wire taps
- wire ties
Before you begin, make sure you have all of your wiring for this install. This would include the power wire that will go to the battery from the Basslink, A short ground wire that will attach to the rear hatch area, the remote volume cable and the speaker input wire that will run from the subwoofers amp to the head unit.
Once you have all of the cables, it's time to plan how you will run these wires. I chose to run the power, speaker and remote cables along the drivers side under the plastic covering. I chose this because it was a straight line from the amp to the battery as well as in sight of the location that I wanted to install the remote volume control.
My install won't use a remote wire to turn the BassLink on and off. Instead I will use the head unit's front speaker output to signal the BassLink to turn on and off. Okay Let's do the hard part: Getting the head unit off and installing the speaker wires.
Step One:
Pop your hood and take the negative terminal off the battery.
If you don't have one, you'll want to buy one of these things:
I tried to use a makeshift pry bar but it got bent up and was too weak to remove the head unit. Spend 3 bucks and get one of these.
Step Two:
Pry off the lower cover under the headunit. This is located right above the accessory socket. You need to remove this to unbolt the head unit from the chasis.
Step Three:
Move your AC vent lever from recirculate to fresh air. Doing this allows you to access the bolt that you need to remove. (this picture shows my make shift "pry bar"

)
Note: You might also want to remove the lower glove box in order to get a better view of what you are doing near the head unit.
Step Four:
Use an 8mm socket and a ratchet extension:
Then remove the bolt under the head unit by accessing through the lower panel you removed in step 1. In this picture you can see my ratchet extension pointing at the bolt (circled area). The photo was taken from the lower glove box, aimed at the area under the head unit.
Step Five:
Tape up the area around the head unit. Make sure you double tape the areas you plan to use the pry bar with.
Step Six:
Removing the head unit is the hardest part! Use extreme care when removing it. If you open the upper glove box you will notice a small notch on the side of the head unit. Put a flat head screwdriver in as far as it will go and then slowly pull the screwdriver toward you to break open the initial clips holding in the head unit.
Once the head unit is pryed open a bit, use the mini pry bar and
carefully pry the head unit loose going around the lower half of the unit. The AC ducts are connected to the top of the head unit so those will come off as well.
Put a soft towel under the head unit to protect it and the area under it from getting scratched. You wouldn't want your vinyl and plastic all scraped up right?
If you've gotten this far, you're almost done.
Step Six:
There's a lot of stuff connected to the head unit but you're only interested in one connector, the one that is circled.
After much searching and pleading with folks all over the net, a nice fellow posted the wiring for the GE8 head unit. How this matches up with the 2008 Accord wiring harness is beyond me since I looked at the Accord wiring and it's different?
Anyways this is what you want to know:
Battery
Wire Color PINK
Polarity (+)
Location RADIO HARNESS
Pin # 24
Accessory
Wire Color ORANGE
Polarity (+)
Location RADIO HARNESS
Pin # 14
Ground
Wire Color BLACK
Polarity (-)
Location RADIO HARNESS
Pin # 12
Illumination
Wire Color GRAY
Polarity (+)
Location RADIO HARNESS
Pin # 13
Dimmer
Wire Color RED
Polarity (-)
Location RADIO HARNESS
Pin # 1
Power Antenna
Wire Color BLACK
Polarity (+)
Location RADIO HARNESS
Pin # 3
Speaker 1
Front Left
Wire (+)
Wire Color LIGHT BLUE
Pin # 23
Wire (-)
Wire Color LIGHT GREEN
Pin # 22
Front Right
Wire (+)
Wire Color BROWN
Pin # 19
Wire (-)
Wire Color RED
Pin # 18
Rear Left
Wire (+)
Wire Color GRAY
Pin # 11
Wire (-)
Wire Color BROWN
Pin # 10
Rear Right
Wire (+)
Wire Color BLUE
Pin # 7
Wire (-)
Wire Color ORANGE
Pin # 6
Be careful that you choose the correct RED wire! The red wire that you can see in the photo above is the WRONG one. That's the dimmer wire. The red wire you need is located on one of the
other rows.
I chose to tap the front speakers for this install, so I ran my speaker wire from the rear hatch along the driver side then pulled it under the steering column then through to the head unit.
Make sure you do a good job when you use taps or you'll have to take the whole head unit off again to fix it. For now leave the head unit where it is and let's start running the wires.