I'm replacing the starter on my 2002 ford focus. the new starter came equiped with an addition "pig tail" on one of the posts which is supposed to solve a "no start problem" with older model fords. What do I connect this wire to?

The pigtail should be mounted to the smaller stud on the starter solenoid.

The other end should have a but connector and there should be a peice of heat shrink tubing also supplied. You will cut off the connector on the small wire that went to the spade terminal on the old starter. then crimp that wire to the new pig tail and then place the heat shrink tubing over the connection.

This will solve the problem with the spade connector corroding at the starter which causes many no crank problems with ford vehicles. Especially the older Taurus.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa