My runninglights wont work I replacedthe bulbs

Yes according to Ford Motor Company every vehicle they manufactured from 1999 model year to present have Daytime Running Lights.

You need and electrical mechanic. There must be a broken wire or bad connection. You have to check everywhere under and in the back of your taillights. Good Luck!

If you mean the parking lights, have you checked the fuse and the headlight switch ?

have you checked to see if the bulb is good

A suggestion? Here it comes...I presume when you are saying you replacedthe dimmer switch, you mean the interior turn/head lamp control arm on the colu'm. Try this...Remove or disconnect each left turn signal bulb and try it again with that bulb disconnected. When the four ways do not come on it is that particular bulb that the socket has a short. Clean socket, replace bulb and hope for a ta-da!

Let me know.

You got a short somewhere buddy and finding those are a pain in the *** time and labor wise.  Any time there is an electrical issue, make sure you got a fat wallet cause the mechanic will milk the hours out of it while eating their sandwich and chips.

Spray starting fluid in throttle body to see if it starts if so change the fuel pump. Check fuel pump make sure it is kick on the fuel pressure should read 30 psi to start the truck.

this is caused by a heat damaged headlight switch and the connector to the switch, the Ford dealer sells both parts, there may be a recall.

U must remove/bypass the DRL module.

day time runninglight off all the time