Help with wiring fuel sending unit / fuel pressure sensor

[dpb]

Hello! This is my first time posting here but I wasn't able to find what I was looking for after searching online and through the forum. I'll try and make this fairly short but hopefully include all the necessary information.

 

So I left my truck sitting at work over the weekend and some jerk decided to steal my fuel sending unit. He dropped my fuel tank, cut all the fuel lines, cut the electrical lines, and inlet hose. I have the the lines fixed but I'm not quite sure how to fix the wiring for the fuel pressure sensor. I would normally look at the original when replacing something like that but since this guy cut the lines and stole the original I'm not quite sure what to do. I think I have the actual fuel pump figured out since the colors line up on that one.

 

The fuel pump has 4 wires, 2 of the wires are a slightly thicker gauge than the other wires.

 

The fuel pressure sensor has 3 wires and the colors don't line up at all with the new harness. I'm just wondering if there is any way for me to figure out which wire goes where.

 

I have a 1999 Silverado 1500 with the 5.3L.

[swathdiver]

A subscription to AllDataDIY will give you access to the wiring diagrams and drawings.  That's one of the worst kinds of thievery!  I hate thieves!