WIRING
Weeks of research on cable no one will ever see.
Six kinds of wire, all of it Techflex-wrapped.
RCAs. A completely different 75-ohm cable for the SPDIF coax (even though it looks the same). Optical for the PAC module — the only pre-fab wire in the entire truck. Speaker wire. Power wire. Hookup wire. Then the work of making all of it look amazing, even the wires no one will see. Ferrules. Soldering. Pinning harnesses. Screw-on RCAs work fine; that was not the path I chose.
Helix DSP Ultra — braided RCAs pinned and dressed at the amp board.
Welding wire, and one vendor I won't name.
The best power wire is welding wire. Period. I learned that after ordering from a less-than-reputable vendor who shipped defective insulation and refused a return. I won't call them out — they knu who they are. 0/2 welding wire runs to the battery, feeding distribution blocks on the amp board.
0/2 welding wire, Techflex-wrapped, running to the battery.