Running Board Lights

[DeanM2]

Would like to add some LED lights above my Running Boards. I want these light to work ONLY when the cab lights come on/off when unlocking the truck.

How can/where/should I tie into the existing wiring to connect these lights to the existing truck wiring that powers the interior Dome Lights so that they come on when I unlock the truck, and go off after I start the truck; which I think is the normal behavior????

Separate but related, I see that there are rubber "plugs" along the bottom of the truck body sill. Would these be a good way to bring the LED light wiring that will be mounted on the bottom of the truck body sill into the truck?

 

[AV8OR]

For the amount of money we pay for these things they should be standard.

 

[Dougs 2021 Ram]

Would like to add some LED lights above my Running Boards. I want these light to work ONLY when the cab lights come on/off when unlocking the truck.

How can/where/should I tie into the existing wiring to connect these lights to the existing truck wiring that powers the interior Dome Lights so that they come on when I unlock the truck, and go off after I start the truck; which I think is the normal behavior????

Separate but related, I see that there are rubber "plugs" along the bottom of the truck body sill. Would these be a good way to bring the LED light wiring that will be mounted on the bottom of the truck body sill into the truck?

I tied them into the puddle lights on my mirrors using this relay https://www.amazon.com/dp/B09T3RT5MG?psc=1&ref_=cm_sw_r_cp_ud_ct_5E39XGC1FKPHRCBCXGVK . this relay closes the switch at @ 3 volts as the puddle lights ramp up from 0 to 12 volts upon activation
i spliced the wires from the passenger door module connector C1 pins 1 & 5 for the control side of relay , i ran a 2 amp fused wire direct from battery for power side of relay . if memory serves the wires were grey and brown w red trace. i am not 100% sure on the wire colors