Yesterday...i was working on my pick up.....got my brake light switch fixed.....as it didnt work......i also go new bulbs on the third brake light......but as i was testing them....i decided to back up and i noticed that my back up lights dont work.....and i was wondering ""WERE IS THE SWITCH LOCATED SO I CAN CHANGE IT" BACAUSE IT IS NOT WORKING"..????
is it around the tranny?....i will be servicing my NV4500 and i mean i could change it if i could find it....but cant seem to...
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Re: cant find the switch.......
Of course you know the bulb is good? If so, some vehicles now incorporate the back-up switch with the neutral start switch which is on the steering column unless you have a floor shifter. Maybe the switch got bumped out of adjustment when you replaced the stoplight switch.
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didnt specify vehicle -- generic answer -- recheck bulb new doesnt mean free from defect also check the socket --the light that lights up can be the tail lights some vehicles have one bulb but has 2 filiments [brake tail ]
Obviously you have a short somehow power is bleading over to this circuit. You may be forced to do some hard debuging (i.e wiring diagram, test light isolate the problem on the circuit).
If I were taking a guess I would try the following:
1) Remove the fuse for the taillight
2) If the light goes out I would start looking at the dashboard light switch
3) If the light does not go out then I would start looking toward the rear end of the truck wires that are scouffed, trailer light connections ect.
Hope this gives you a start, needless to say a short can take forever to find.
very possible that it's your brake switch. look under your dash on the brake pedal arm and it should be a switch on there. If you press the brake with your hand while your down looking at the switch and you cant hear a click that click is when the switch makes. if you dont hear a click reposition the switch until you can hear it activate then your brake lights should work
Not even the third eye? then the fuse is blown or all the bulbs are out or the brake light switch on the break pedal is bad wire off or broken( it breaks right off the plug then crosses then blows the fuse as the loose broken wire hits the brake pedel arm. Test the break pedal switch first if the third eye doesesnt work either. no power with a test light the fuse is blown or the wire broke ( the wire goes straight to the switch from the fuse and doesnt go anywhere elese. the other wire if hot should light the lights. Most of these wont come out of park without this working as the wire also turns on the park release but some Fords the park release sticks released and Ford made em that way as they didnt like the brake to get out of park law. If the brake lights dont work maybe you ought not be able to get out of park anyway till its fixed. the switch is hot on both wires with the switch pused down and the lights dont still work go after the third eye first if the bulbs are bad change em before you do the rest of the work. on cars with yellow turn signals the brake lights all work on the same wire but red only use three wires, but you didnt say the turn signales didnt work if they work and they are red you r on the way to the turn signal switch as the brake switch powers the turn switch with power then it splites it fot the two lights and adifferent switch circuit for the front hooks them all together for hazard. yellow turns in the back or even separt bulbs can mean blown bulbs ther too its old enought for all the bulbs to fail and the runs still work.
if the third brake light works you will probably need a brake on off switch. the fuse panels on that truck are under the dash near the steering column and under the hood in the power distribution box. both of these panels are identified in the owners manuel.
The brake lights are activated when you depress the brake pedal. When depressed the brake light switch, which is located on the brake pedal level, allows the circuit to be complete. Check for power on one side of switch then depress pedal and see if it allows power to other side of switch. Keep me posted