If the lights are LED, you might have to check some more to get a dimmer specific for them?
I don't think any "off the shelf" dimmer is going to work with LED's??
If the lights are your old 1156 bulbs, you can probably get any dimmer for them, but I don't know for sure??
I remember replacing my old 1156 bulbs in my old 2003 Prowler with some LED's and they worked great.. You could still turn on one or two of the bulbs in the fixture from the switch, so that was my 'dimmer'.. :)
I did get some LED specific lights that you could dim with a wireless remote, but they are battery operated and I put them where I needed more light in the corners of my slide out and they work great too.
Good luck! Mitch