Fuses are all good wiring is good and still no power or lights

Without knowing the kind of vehicle you have, just start with basics first. Take a test light, hook to good ground (check light works by other fuse power to light) and check each wire at the brake light switch. Should have power on one of the wires. If you don't then you need to check between fuse and that wire. If you have power at the switch, step on brake and check for power coming out onto the other wire. ( that checks to make sure switch works). If power goes thru then you need to trace that wire toward your brake lights for open or for bad ground. Check for power at the light may have bad ground keeping lights from lighting. This should get you started. This is as much info I can give without knowing more on vehicle.

I am a little confused by your light test of the fuses. If you put a test light across a fuse while in the fuse box it will light if the fuse is bad. A good fuse should let the power go through the fuse first instead of the light so a good fuse should not light a test light. That fact you jumped the fuse with wire also suggests the fuse is bad but you grounded it directly to the body instead of letting the power run its proper course through the wiring harness. That's probably why you can't get it to shut off unless you disconnect the wire.

Have a look at the main fuse, it has to be the problem. You could take out the fuse & connect the terminals together using a piece of wire, that'll tell you if the fuse is the problem.

start by checking fuse. if fuse is good, aquire a test light, check the test light on the battery to make sure the test light works. Power to ground = light. access blower motor under pass-side dash panel.(probablly have to remove underdash cover, secured with pop-in style fasteners.) locate blower motor. 2 wires w/connector Purple-power, black-ground. check for power at purple w/test light on known good ground, with ign on, and blower switch on high. if it has power, hook clip of test light to a power source, ( + on battery w a jumper wire) and probe black wire, with test light. if no light, jumper that wire to a good ground. if it lights, you have a bad b-motor. if no light on power side of blower motor, and fuse is good, check power to swith. blower circuit may have 2 fuses. 1 for high and a 2nd for the lower speeds. if switch has power to it, and power is transfered to another wire when switched, suspect the blower motor resistor. James White, White Automotive, Hopkins Mo. ASE tech, 17 yrs exp.

According to the wiring diagram, the left and right low beams are connected to the same wire which is
vt/or. Check for power on this wire. Also check for a good ground on the black wire.

WITH A GOOD FUSE TESTER, TEST ALL THE FUSES FUSEBOX UNDER THE HOOD & INSIDE THE VEHICLE. IF THE FUSES ARE ALL GOOD WITH THE TESTER YOU MUST HAVE A BAD BRAKE LIGHT SWITCH OR A BAD TURN SIGNAL SWITCH. THE BRAKE LIGHT CIRCUIT GOES UP THROUGH THE TURN SIGNAL SWITCH & THEN TO THE BRAKE LIGHTS. FIRST OF ALL IS THE BRAKE LIGHT SWITCH GOOD ? THE ORANGE WIRE FEEDS THE BRAKE LIGHT SWITCH, THE WHITE WIRE PUTS POWER TO THE TURN SIGNAL SWITCH, SO THE LIGHTS CAN BE USED AS TURN LIGHTS OR BRAKE LIGHTS. , PUT A TESTER IN THE WHITE WIRE & PRESS ON THE BRAKE PEDAL. IF THE TEST LIGHT LIGHTS UP, BRAKE LIGHT SWITCH IS GOOD, BY THE WAY THE BRAKE LIGHT FUSE MAY BE LABELED" STOP", THE FUSE LABELED" BRAKE" IS FOR THE ABS SYSTEM. TO CHECK THE TURN SIGNAL SWITCH FOR BRAKE LIGHTS, REMOVE THE PLASTIC COVER FROM UNDER THE STEERING WHEEL, PRESS ON THE BRAKE PEDAL, PUT THE TESTER IN THE SMALL YELLOW WIRE, THEN THE SMALL GREEN WIRE. IF THERE IS NO POWER IN EITHER WIRE, THE TURN SIGNAL SWITCH IS BAD.

You can try an internet search for the wiring diagram. No power to all the parking lights? Then probably the light switch. Make sure you have power to both sides of the fuse. If not the either wiring from the switch or the switch itself. Good luck.

The first thing is to check for power at the brake light switch,there should be power to one wire the other wire power up when pedal is pushed, this will tell you if it a power loss if theres no power to switch, if theres power to switch and through switch with pedal pushed then loog at the connect for signal switch its near column big connector as brake light power goes through switch you may have fryed that wire have some watch lights as you wiggle but this is only if you have power at brake switch. if theres no power then double check fuses even in the engine compartment, mostlikly it a fuse the wiring should not of burnt with a fuse in line, theres fuses in engine fuse box that also control lights.

Lets keep it simple if the wiring harness is in good condition lets not look at that... first check your fuse if the fuse is good... check for power... if you have power coming and going from the fuse then check your brake switch ( located under the dash) attached to brake pedal. Please make sure your light bulbs are both good also. If your brake light switch is good and you have tried everything else it is either going to be in your 4 way switch or wiring harness