Chris, as long as we're talking about your car -- I'm wiring audio connectors. The mic has two wires and the XLR, to which I've gotta connect the mic, has three. Hot or ground to pin 2? What about 1 & 3? I'm cornfused. Please help.
First question is, why are you using a hi z mic? Don't make the cable too long, especially around engines with copper core cables.
Normal balanced XLR (cannon) is
1 - shield
2 - hot, or +
3 - cold, or -
And that's not what you're doing.
Sounds like you're using coaxial cable, so -
XLR pin 2 to hot (center)
XLR pins 1 and 3 to shield.
And this may pertain to my car. The crank trigger sensor is a balanced cable - I'm thinking of installing an XLR mic connector to it, and a military grade, explosion proof XLR male jack in the firewall. Makes pulling the engine a lot easier.
Wireless?
.....next you'll be using transistors!!!
make a donation to the poor box and say three hundred hail Leos
Oh, dear - somebody got their Mullards in a twist . . . 
Hey Svetlana, don't get RCA with me! else I'll have to do some rectification you by putting a choke on you.
Dr " they don't just sound good, I love the way they SMELL" Goggles.........
Okay, let's talk about the preamps in the Tele Elites . . .
