Some great information in this thread. Iíve been wanting these on 1996 Ford F350 for some time now, but no one makes a kit for these OBS trucks.
I drew up what I plan to do with my truck. But this would apply to all trucks. Thereís a lot of lines to follow and it can make you dizzy at first, but if you understand how relays and an LED flasher work, then this will make sense.
Most of what you see here is what durafish explained in his original post, only I made it visual as I think it will be a lot easier to understand this way. I also added a second relay to take advantage of the 2 channel flasher. I think 2 channels will be sufficient. If you want all 5 lights to operate independently, you will need a 5 channel flasher and need 5 relays to do it. And if you watch the youtube videos of the Atomic kits, you can see that most all patterns appear to use a 2 channel flasher anyway.
Whatever LED bulb you use in your cab lights will work with this setup. So if things donít seem bright enough for you, all you have to do is swap out the bulbs.
I havenít done this work yet, but I see no reason why it wouldnít work Ė but Iím not an electrical engineer. If anyone sees any flaws in this diagram please point it out.
I figure $5 for the on/off switch and momentary switch (optional to change patterns), $30 for the flasher, $10 for the relays, $40 for the bulbs (depending on what you get), and another $10 in wiring. So for under $100 and a couple hours work youíll have strobing LED cab lights.
here's a couple of videos i took today once i got the cab lights up and running. they are wired as per my diagram above. i am very happy with the way they came out. the camera i was using isn't the best. the lights are actually brighter than they appear.