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Brake lights 1999 jeep

Bulbs replaced still no lights when brake is applied

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  • Jeep Master
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If the pin 6 is hot, fuses is good, 12vdc
step on brake. pedal,.
Stop lamp switch
if pin 5 is 0v, the switch is bad. or not adjusted as the SM tells you.
if pin 5 like 4v, the line is shorted
if pin 5 is 12vdc (means battery volts) then the line is good
and problem is at the rear (from pin 5 to rear is wire and connectors that any point can fail,)
the point that causes the voltage to be low is the failing point.
called voltage drop due to resistance. (corrosion or broken wire)

Posted on Dec 16, 2016

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  • Jeep Master
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I looked at info for 99 jeep Cherokee. You can see the fuse and the stop lamp switch, which should be activated by the brake pedal arm when you step on the brake. The white wire with tan tracer carries voltage for rear brake lamps. The ground wire is black, so check voltage and ground. I don't know if all models have the same wire color, you didn't post the model?
brake lights 1999 jeep - 26400490-35yqqncornw32rkc1bqx1h2w-5-0.jpg

Posted on Dec 15, 2016

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