I was hoping someone might be able to point me towards a resource for efficiently locating the correct wire for the bed/cargo light so I can tap in and engage it without also turning on the interior lights.

I recently installed a Magnum HighPro headache rack on my 09 F150 XLT. I wanted to be able to use the clear LED back up lights as work lights as well so I tapped into the reverse light circuit at the fuse box under the hood and added a switch.

So my switch engages the LED rack lights and the reverse bulbs in the tail lights, which I'm swapping for LEDs this week, but I would also like it to engage my cargo/bed light at the same time. I'll be swapping those clear bulbs for LEDs shortly as well.

 

Any ideas? I'm going to bumble through it in any case. I'll report back once I figure it out.

 

Bump for ideas

 

I have a tonneau on my bed and the LED strips are tapped into the park lights and have been on since 2012 when I purchased my 13. Because it is covered and does not shine outside the truck anytime I open it when truck is on or I press the unlock key they are on. Never had any issue with this setup.