Low Level Input and RCA Interconnect Wiring
(fig 5)
For radios that have RCA line outputs. You will need to connect the low-level RCA style inputs
from the BTA-8 to the line-outputs from the radio (source) via an RCA interconnect commonly
called a “stereo patch cord”. Choose the correct length and style of RCA interconnects for your
needs. Always use high quality RCA audio cables (not supplied) for signal connections—those
with multiple layers of shielding or a twisted pair variety for better noise rejection.
Be extra careful when routing your RCA audio interconnect cables. Car environments are notorious
for poorly insulated wires. This means that hiss, engine noise and fan noise can be easily picked
up through RCA cables if run incorrectly. Take care to make sure the power and audio signal are
not on the same side of the vehicle and they do not cross each other.