I have the EZ 1.0 on my Road Runner, so I'm not sure if the wiring is the same. I installed the ECU under the battery tray, and removed all the GM wire looming and wrapped the wiring myself. No "snake's nest" of wiring at all. There isn't much wiring with the system. Most people are surprised when I tell them it is fuel injected! Hopefully the pic attached.

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1968 Valiant Signet 4dr. 273 4spd
1969 Road Runner 383 4spd
1969 Barracuda 318 auto
1970 Dart Swinger 340 4spd
1975 Cordoba 400-4bbl
1988 Caravelle 318 Auto
1999 Dakota R/T
2000 Viper GTS
2001 Ram 2500 Diesel 6spd
2018 Dodge Challenger GT (Winter beater!)