Adding automatic dome lights to a shell - Ford Powerstroke Diesel Forum
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Old 06-30-2014, 09:44 AM

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Adding automatic dome lights to a shell

Hi everyone. I picked up a truck cap/shell off the local classifieds for a steal of a deal and would like to add some automatic dome lights. The shell has the glass windows on the sides that lift open and the rear glass. I would like to add three dome light circuits to the shell, trick is that I want different lights on at different times.

Here is the scenario that I am thinking of. If the cargo lamps, or the rear glass is open, I want all three circuits on, if either of the side doors are open, I only want that sides lights on.

Without using a bunch of relays, I am having just a little difficulty working out the wiring for this.

I plan on using a sensor on the gas strut on the rear windows as the switch to turn the lights on. Right now with a stressed and foggy mind I am thinking a five pin relay for the four circuits (Driver Side, Pass Side, rear, and cargo on) using 87a for all on and 87 for individual lights
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Old 06-30-2014, 10:37 AM
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not sure if relay's are the answer or if rectifier diodes would be better or a combo

but i think two rectifiers could do this job and keep the side doors from back feeding and illuminating the other two light
but letting the rear hatch light up all 3
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Old 06-30-2014, 11:11 AM
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power them all in series then use the switch to ground, for the rear door they all ground.

Get low power LED pods and no relays needed, no heat, less bugs attracted.
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