The wiring Harness on my 94 honda Del sol doesn't have a wire lead or cupling for the MAP sensor, what should I do? Do I need a new wiring harness or can I splice new wires into the old harness?

Once you find the wires in the harness that have been cut or torn away, you can just splice another MAP pigtail into place.

Grn / Wht
Yel / Red
Wht

I show these colors for both the 1.5L and 1.6L engines in DelSol S, 1994.