So I noticed the other day that I had no brake lights with the running lights and headlights on or off thought the bulbs might have been bad but the signals still work fine so I know it’s not bulbs so next thing I checked was the fuse under the hood and it was okay so then I checked power at the brake switch and there was no power it’s a 6 pin connector and I have a power/ground test light but don’t know where power comes in and I don’t know where grounds should be either I just need help asap thanks,
Blake

 

If you are driving a second gen truck, you can download the service manual for it from here. Wiring diagrams are in section 8W.

 

I got it working it turned out that the wiring was fine but the switch by the pedal went out thanks