2017 4runner (IS the dealer bulling me?
 

So my Fog light has gone out and I began to look around for a nice bright decent (not overly expensive replacement.
Immediately the dealer tells me i should not as it wil burn up the wiring harness.
So what is the deal ?Is that true
If not can anyone recommend a decent headlight upgrade path, Obviously first fog, lights then headlights.

Thank you in advance