My transmission downshift wire is missing. I knew about this a while back and then it went on my list of things to do. Anyways, I see that a 16 gauge yellow wire feeds the gas pedal switch, from the radio. Then it leaves as a black/white wire back through the firewall and then to the transmission. Is this black/white wire also 16 gauge? I imagine it would be the same. I want to keep the wires the same color as it’s much easier to follow wiring diagrams that way. Somebody did some “rewiring” under my dash a while back and it looked like a Christmas tree assorted light set..... fun following that and getting it colored correctly. Thanks!