hello im new to a site like this love my 89 f150 to death it has the inline 6 with the 5 speed Manuel im have some running light problem keeps blowing the 15 amp fuse for the running lights and tail lights have checked all the wires including this gray and white ive been referenced to any tips help would be nice to have thank you. crazyT

 

Check the light switch, especially the plug-in. They like to melt and fuse stuff together that isn't supposed to be together. Not saying that's your problem, but it's a good place to start.

 

Clarification --- the 1989 EVTM says "Daytime Running Lamps" are Canadian Vehicles only --- is yours Canadian?