Adding 12V light kit in bed?

[macalex]

I want to add a light kit inside bed and wondering if anybody has used the switch for the light on Lariat to power an add on? Please see picture

Would I wire to light or the switch? Or does it matter? Go easy on me, I'm new to this asking questions.
I realize these lights will come on when door opens or with switch by headlights switch.

Thanks of any help in advance.

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[RDRahn]

I did a video on this a while back

 

[macalex]

WOW so very appreciative for you sharing this with me.

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