Regular Crown Victoria vs Police Interceptor

should not be any difference . Take it to the parts store with you so you can verify before purchase.

I was hoping you'd know. I' m afraid my sister is being screwed by her mechanic.

Does it look like this? https://www.ebay.com/i/302745032261?chn=ps

or does it look like this one https://www.autozone.com/electrical-and-lighting/headlight-switch/duralast-headlight- switch/63278_0_0_3899

if it looks like the second one, then yes the mechanic was right. The dimmer wheel is different. Should pop right out with a small removal tool or screw driver. unplug and take it with you.

I haven't seen it. The mechanic has it.

Now you know so you can show your sister.