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Re: 1999 5.3 wiring harness
80 pinouts per ecm plug=160 pins -5ish unused each side is ~150 wires. At an average of 4ft per lead (guess based on my van harness), that means you have roughly 600ft + of wire to run. lol
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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