could be an ignition switch, also, just because a battery reads 12 volts, doesn't necessarily mean it has the AMPS to do the job.... a bad battery can still read 12VOLTS... good luck :)
Check the headlight switch, if not it's probably a fusible link in the headlight circuit.
Check fuses and the headlight switch.
Look at your realys next to your battery and check them all
even if you disconnect the battery the headlights stay on????????????? check the headlight switch
Use a wire tester and check everything from the light switch to the headlight assembly. If there's no voltage at te headlight switch, then trace it all the way to the battery.
Check the fuse/relay panel box adjacent to the battery, under the hood.
That's what I would check first. If the battery checks good, make sure battery cables are tight. Also check the fuse.
Check your battery terminals, when it has enough power to run the starter, then suddenly not its probably a loose or corroded battery connection.
Check battery if low could trigger alarm.
Check to see if your battery is secure. in my jetta the battery kept sliding forward and smacking my left headlight because it was not tightened down
The battery was week and stopped recharging. Check the date of the battery! The batt feeds some electricals directly...Flat batt could stop engine from running.
Most electrical components also use a relay so check for one, then check the headlight switch itself. The switch will tell the motors to activate via the relay.
realign the head lights, check battery termninals
check your battery if the battery is not working properly then the engine will send the power from the alternator straight to the headlights and other electronics one way to test this is if your lights dim when you are in idle and get bright when you are reving BTW i would recomend carrying a flashling in case of this happenig in the middle of a forest lol. if not the battery check the headlight wires and the bulb used
For starts CHECK FOR bad connections on the battery or alternator, check the ground connection also, check for master fuse link if any, bad alternator that drained the battery to it's last drop of power. check for shortage in any wires, check for fuses, relay. GOOD LUCK:-)
check for proper grounding, bad wiring. Check voltage with a voltmeter in different places to see where you are losing it. Alternator, battery, at the headlight connection, fuse box & relay (if applicable). could also be caused by belt slippage, or lights with a higher wattage than recommended.
You can check battery life with a voltmeter.
check your battery connectins. you could have a bad ground
check voltage of battery with multymeter,check water leval, specific gravitycheck if battery is too hot while cranking
Battery Check was created on 2003-07-03.
Check all your grounds. Battery to block and your headlight sockets.
If the battery is stone dead it won't take a jump. If the battery has some life in it check for dirty or loose battery connections. If the battery and connections check okay it could be a bad starter.
Dead battery if it is having trouble turning over or the starter motor is going out. Check the battery cables and ground straps at both ends for corossion
headlight relays (nxt to battery) or the actual switch in the car ...check you have 12v at the red wire behind the switch...could even be the switchable relay the headlight wires run to with a purple an white wire
check the ground wire to that headlight .