my 95 1/2 ton has brake , turn and hazard lights but no running lights. Ive replaced the tail light units and bulbs, headlight switch and fuses.?

 

check the bulbs as well. check the connection at the bulbs as well. check for broken wires as well.

 

thanks, everything is new back there. looking at the wires now.

 

Running lights or Parking lights?

 

95 doesnt have running lights.. im guessing parking light slike racer said

 

check your switch in the dash board, pull the cover off and press all the wires into your switch firmly and see if that fixes it, if it dose you might have a crunchy wire, i had the same problem after i tapped into my running lights for led cab floor lights i installed, i was on a trail and my dash and running lights all just shut off i popped the cover off thinking my tap into my running lights was to blame, and it was the connection in the switch box the wire was coming out just a simple press back in everything worked. so wires to the switch or the switch its self

 

You should have ran an alternate switch for that. These trucks come with many detachable panels for extra switches. Also the fuse panel has many add ons and grounds blocks.

If it is the parking lights I suspect the headlight switch. If it the running lights, aftermarket you gotta fault trace. Maybe a fuse, relay or bad power or ground wire.

 

i do have an second switch so they only turn on when i have the park lights on. and they are LED lights so hardly a power draw