Every wire I removed came from something that no longer exists in my car. Example, when I removed my heater the connectors that plugged into it I labeled them to be removed since their end location was the heater. I physically traced all the wires and all of them led to either another connector or a fused location. I only removed the wires that came from those connectors. Some connectors on the car after I depinned them had half as many wires as they originally did because they were part of several systems. I've been very thorough in how I removed the wiring. If I wasn't sure what a relay did that I though I could remove I asked and confirmed what it was before removing it. Example, the 2 A/C relays that were originally next to the fuse box are now gone, along with the RTR fuse and all it's components (the pins the fuse plugs into and the wires going into those pins).