I figure my time is worth $50 an hour to me. I don't believe I could build a harness from scratch in 3 hours. Plus no telling how much it would cost to buy a roll of each color and size wire you need. I'd go for the $150 one.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.