Question about Jet Chip

[2000blazerls]

I got the Jet module # 20004s in the other day. I was going to install today along with the 180 degree thermostat required. Thermostat no problem. My only question on the module is that is says to clip into the "pink" wire coming from the cable set labled "black". No problem, the black cable set is clearly labeled. Problem is, I appear to have 2 pink cable, one a slightly lighter shade pink than the other. There is also a red wire too so I do not think the light pink one is a faded red wire. Which pink am I supposed to use? Too late to call Jet Tech Support so I thought I would ask you guys to see if you knew. The pink one that is a tad darker than the other does look almost the same shade pink as the power wire from the module so I kinda assumed that was the one to use. Just wanted another opinion before I go splicing into the wrong one and shorting something out.