Originally Posted by heavyduty
Yes, the best solution is to purchase the replacement harness ELA-HP-AWK. The possibilities you have listed will not work.
As for the power wire, the amplifier has a maximum amperage draw of 7.5 amps. You can increase the power wire as big as you would like, however, there will be no real benefit of doing so.
! Just wondering,would paralleling the two speaker level input pairs on the SW line output not work because of likely inadequate SW volume, inadequate sub-amp input impedance seen by the line output, risk of damage to the sub-amp with its two speaker level inputs directly connected, or something else?
Between the power wire and the shorter ground wire the total length is roughly 20ft. I'm not certain if the gauge is 16 AWG or 18, but at 7.5A there would be a 1V drop with 18, and .6V with 16. Not that I'm criticizing the subwoofer, I'm just thinking bass accuracy might be further enhanced with a stiffer power and perhaps especially a stiffer ground connection.