I have a sonic hub 2 connected to hds live 12
All was working fine until I upgraded jl amp from 600 6 to an 800 8
The plug for sh2 has 12 volts to red and yellow wire when not plugged into the sh2.
As soon as I plug it in the voltage drops to 1.5 volts on the hot wire.
Only thing I can think of is an internal short in the sh2
Please help as I think these units are something else that starts like sh2
Nmea connection has 12 volts. On it.
Can't find on device list