it's a major pain in the <img src="/forums/images/graemlins/butwiggle.gif" alt="" />.
Consider this in order to removeit you need to pull the dash, heater core & a/c evaporator. And that's only on the inside. Under the hood you need to remove the radiator & a lot more other stuff. You are looking at least 4-5 full days of work if you are doing it alone & for the first time.

The above is in regards to the harness that goes from left to right in the engine bay.

If they are talking about the one that is on the engine, than you would have to pull the engine to replace it.

"If i can't crawl over it, i'll fly over it"
rubo

'96 Amigo 4x4, 3.2L V6, 4L30E, D44 rear, SOA, 1" BL, undergoing surgery.
'00 Rodeo LS 4x4, 3.2L V6, OME 919 Springs, front cranked to match,1" BL, 265/70x16 Scorion A/T's.