With my 5.0 no codes came up when I plugged the egr I left the valve itself plugged in though.
My wiring wasn't really that bad lol I ran all of my relays & fuse panel on the passenger side. I only used i'd say about 25 wires? The reason the wiring was all over was because instead of going to buy a lot of wire to wire the whole truck I figured I'd cut up the existing harness to use the wires out of it to save some money
This is what it came to. This pic was taken right before wrapping the wire.
