Identify which Coleman A/C model you have.

Look for this in your A/C Unit.

After opening your A/C unit look for the metal electric box housing the capacitors (look for a shock hazard warning label). Remove the access panel of that box and on the back of the panel, locate the wiring schematic shown above and find the number beginning with 1976. This will provide the cross reference number needed to identify the wiring and 6 step installation for your a/c.