Why headlitght wont work but good bulb where do i look next

check fuse

Try a reboot. Disconnect the ground lead from the battery for 15 seconds, then reconnect and try again.

check ground wire s make sure there grounded properly clean surfs if not bulb !

Hi:
Check the electrical circuit for broken wires or non-functioning parts. Light switch working? Light bulbs OK? If there is electricity and the bulbs are OK, they will work. Time and tester and you'll solve it!

Check your ground wire connections, if you are sure the bulb the is good. Ground wire connections often corrode or loosen from vibration over time.

Check your spark plug to see if it is fouled out see if it is dirty with carbon deposits white discolored or tan looking also check to see if the plugs are wet with gas or oil if everything looks good and you don't smell a high content of gas the next thing you could do is compression check and or check intake valves

check the gound wire to the bulb

Where did you ground the winch motor? You need a separate, heavy duty, switch with a relay to transfer the positive side voltage properly... DO NOT ground to the battery..use a clean, free of paint, place to ground. You may have fried the solenoid..do not connect the positive side to the solenoid. Direct connection to the + battery from the relay is good with a good waterproof fuse in line. Sometimes I have seen the "maint. free" batteries die when used "wrong" and still show 13 volts+.

check fuses... see if the bulbs are bad,,, silver-black looking means over-voltage... sometimes a hard ride will cause them to "just break"

hey Tammy... does the neutral light come on??? if not... find neutral..see what happens.. next.. have your batteries CCA checked.. (Cold Cranking Amps)...the amperage is what makes the starter work..NOT voltage...you can take it to Oreilly's, autozone, batteries and bulbs, or your local battery store...