merc 815 truck

[hond139]

i i have a merc 815 7,5 ton truck when i switch on the lights the bulb failure light comes on have checked all light are working

[_bryan_]

Could just be a poor connection in the wiring. Check all the wires going into the back of the bulb holder for any corrosion or signs of arcing, clean up or replace as required.

[T1pper]

The light comes on if the bulbs are of the incorrect wattage so check all are as per recomendations low wattage ones work but the computer does not accept this.

Also if LEDs lights are added this confusses the computer as it will read different from the original bulbs lastly I think (?) it also needs brake lights etc to be working as well.

Good luck!

[hond139]

cheers guys will do a bit investigation