They sure make things easy, the trouble is that by design, they can cut through almost half of the original wire in the truck's wiring. Some picky ECUs or BCMs can notice the difference in resistance and throw a code or put a light on and then you are off to the dealer to get your wire harnesses's warranty voided.
Since they are very accessible and there's only two wires, you are probably going to solder right?
I prefer soldering, but with my alarm and the 35 wires I had to splice, there was no way I was going to lay upside down under the dash and drip solder in my eyes for 8 hours to get the job done... splicing sufficed there... and lots of split loom and electrical tape and some cursing too
