Just wondered what type of interconnect cable works best.
I have a tech that's making a set for me. (free)

He's recommending NeoTech "high resolution interconnect OFC cable"
It's similar to a co-ax type cable with center core conductor & braided second conductor.

No doubt it's very hi quality...
just wondered about noise rejection for automotive application.

Any feedback appreciated.

 

I would recommend a set of balanced twisted pair conductors, they seem to reject noise a little better then coaxial cable. Also, they tend to be a smaller in diameter and are more flexible so installing them is easier. For the RCA ends, get a set of turbine style connectors, the they tend to grip the RCA jack a little better and are less prone to pulling out or having a poor connection since they grip the jack so well. Lots of good brands out there, Monster, Streetwires, Stinger are brands that I have used in the past and have had no issues with them.