2003 Tundra fog lights do not come on

Both fog lights do not come on. Already checked fuses. When using turn signal switch to turn on fog lights, the high beam lights come on. I suspect bad switch. I purchased new fog lights that came with harness and oval switch. Do I need to install this or any thoughts on how to get them working with the original switch?

 

Welcome from LA (Lower Alabama)! You can try the wiring diagrams here:
https://www.tundras.com/threads/ultimate-tundra-wiring-diagrams-collection.81448/

You can also post you question in the Ask thee Toyota Mechanic thread here:
https://www.tundras.com/threads/ask-the-toyota-mechanic.2404/

 

Welcome. So first off, the 03 uses the stalk style and not the oval dash button. Second, do you have LED headlights? The resistance is too low to trigger the fogs, if you do. Third, please ensure that you have the correct relay. The 00-02 fog lamp relay is different from the 03-06. Check out the parts section HERE for the correct part numbers. Lastly, do an advanced search of the forum for fog, selecting 1st gen and select relevance. That will point you in the right direction.

 

Welcome from NY.