headlights blinking/factory tach sticking

I can't provide any help off the top of my head on this...
But you will get better responses in the general tech section.

I pm'd Daggar to see if he can move the thread for you.

Good Luck,
jason
 
SEE http://www.corral.net/tech/maintenance/foglights.html to fix the problem. The stock wiring isn't up to the job and is overheating. The headlight switch & turn/multifunction switch are affected by Ford's wiring problem. Sometimes it overheats so badly that the plastic shells of the wiring connectors start to melt. This will show you how to add a relay to the fog lights to relieve the overload on the headlight wiring.