Fog Light Circuit Breaker Understanding and Diagnosing Trip Issues

i have a 2000 ls400 my fog light bulbs stopped working i checked them in another car and they work but i dont know what the problem is. i ... The fog lights are not working on my new to me 3rd gen Toyota 4Runner. In this tutorial video I show you how to diagnose a faulty fog lamp ... You can rule out a bad light by plugging the driver side light into the passenger harness. If it blows its something else. Like. Reactions ... Remove both bulbs, install the correct 15A fuse, turn on the lights again (you won't get any light since the bulbs are missing). Then go check ... There's something wrong in the wiring/switch/bulb. I'd check behind the fog lights first, and look for obvious exposed/chaffed wiring. As the title says; have replaced about 4 fuses now but again and again after 4-5 minutes of use the fog lights shorten out. Trace the wiles back from the light houisings. There is either a broken wire or a loose/corroded ground connection for the lights. How to diagnose and fix illumination, park lights, rear fog light and front fog lights which no longer work, using a wiring diagram or basic ... Check polarity. LED's are picky. If they're hooked up backwards, they won't light. If it is and the fuse is not blown, turn the fog lamp switch ON and check for +12v power at any fog lamps connector terminal "A". If there is no ...