Please help with install info.
How do I get to the head unit?

 

huh?

i don't have this and haven't installed one, but its my understanding that there is NO reason to "get to the head unit" to put the Basslink in.... just run a power wire to the battery and splice into the speaker signals at the amp in the trunk.

If you do a search there is a fairly recent thread about the install.

03 6MT coupe, red/willow, premium, aero, splash guards, alum pedals, clear corners, 15% tint