Check your wiring and see if there is a bare spot in it to cause a fuse to blow. Check ALL of the fuses as it depends on what circuit you got your voltage from.
If the lights you added require more power than the circuit you tapped into can supply, the extra load blows the fuse.
hard to say is the starter turning could also be a fuel problem or electric/ecu problem
Circuit breaker or switch
If a circuit has no switch then it remains 'on' permanently. If you desire to open or close a circuit, for turning on or turning off a light for example, you need some kind of switch.
If the switch is what is keeping the load from turning on, then yes, there is a voltage across the open switch.
Cant as the game is Fu**ed!
Electricity only works when it can flow all the way around a loop called a circuit. Turning off a switch breaks the circuit, stopping the flow and turning electrical things off. Turning a switch on joins the circuit and makes them work again.
Physically has a turning problem ? Try your spare key and still has the problem? Replace the ignition switch.
Because the power for your headlights is pulled from your battery. When the dashboard lights dim after turning on the headlights the dashboard lights aren't getting as much power as they were with the headlights off. With the motor running or off? The headlights draw a lot of current, but should not visibly affect other systems. There could be a problem with a worn out battery, an alternator that isn't charging correctly, or you have a bad earth between the battery and the chassis. Check the large cable connection between the battery (usually negative these days) and the bodywork, or between the engine block and the bodywork.
A series circuit. Turning off the light interrupted the only path for electricity to the hair dryer.
It breaks the circuit and when it's removed the circuit is complete so electricity can flow.
Do you have lights? If not, you r battery is probably discharged. I guess there could be a problem with the starter circuit. I believe this has a fuse in the underhood fuse block.
its probably hunted its probably hunted