LED cargo/brake light retrofit - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 01-04-2013, 07:48 PM Thread Starter
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LED cargo/brake light retrofit

I decided it was time to ditch the incandescent lamps in the cargo/stop lamp on the cab. I know there are LED replacements available, but the appearance of these units are far too riceresque for my liking. I wanted the reliability and efficiency of LEDs while maintaining a stock appearance.

After removing the lamps, I determined the size of brake light circuit board I could fit into the housing and cut away the reflector/lampholder for the brake light. I purchased a 4" truck tail/brake light that didn't have the LEDs sealed in place to use the LEDs and resistors from, which saved me trial and error of building the LED circuits. An old piece of protoboard was used to mount the donor LEDs. Total of 54 5mm LEDs.



Once the LED board was done, I sealed it by pouring 5 minute epoxy over it.





I purchased 3W warm white LEDs and drivers on ebay. I added new new leads and sealed the drivers in much the same way as I did on my F350 backup lights (picture of my backup light build shown to show driver mods, 3W LEDs are different in size/shape compared to the 10W I used on the backup lights, but the driver is much the same in appearance.)



LED board was epoxied to the housing. 3W LEDs epoxied to cargo lamp socket holes. Cargo light LED drivers epoxied to backside of brake LED board. wiring connected to original connector.



Brake function



Cargo light



All LEDs on



Unfortunately my camera is crap and the white balance freaks out with all the red light. The converted unit is as bright, or brighter than the incandescent was, with a fraction of the current draw and heat output.
Of course, this conversion will require a ballast resistor for proper cruise and TC lockup.

Bill

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1997 F250 RC/SB 2WD project
2008 F350 CC/LB 4X4 DRW Lariat, 3" cow catcher mod
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post #2 of 6 Old 01-04-2013, 08:05 PM
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Very nice billl...as usual. How well with thoes 3watt leds light up the bed of the truck while your in it.

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post #3 of 6 Old 01-04-2013, 08:49 PM Thread Starter
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Light output is nearly identical. Both the incandescent and LED throw the same amount of light in the box. The LEDs have a small silicone "lens" that diffuses the light so it isn't the typical narrow LED beam.

Here you can see the incandescent (bottom) and the LED (top) both lit up.


Bill

1996 F250 SC/SB 4X4 XLT
1997 F250 RC/SB 2WD project
2008 F350 CC/LB 4X4 DRW Lariat, 3" cow catcher mod
2008 Ranger SC FX4
Quote:
Originally Posted by weareweird69 View Post
If your posting pictures bill, everyone dim their screens, that CAT YELLOW is bright
Quote:
Originally Posted by Fordman247365 View Post
Is there anything you DONT take apart and **** with?
Quote:
Originally Posted by JJFLASH View Post
I still say that those Dodge mirrors have as much business on a OBS Ford as yoga pants have on a fat chick...my .02
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post #4 of 6 Old 01-04-2013, 09:00 PM
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I see.... may have to upgrade for some working cargo lights. Haha 10w a piece. If they will even fit?

FRANK THE TANK
DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?
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post #5 of 6 Old 01-04-2013, 09:25 PM
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Or the kit that goes under your bed rails to light that up. Thanks for the write up bill, this is awesome

-Kris-
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post #6 of 6 Old 01-04-2013, 09:36 PM Thread Starter
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Quote:
Originally Posted by ol_Blue97 View Post
I see.... may have to upgrade for some working cargo lights. Haha 10w a piece. If they will even fit?
You could add 10W LEDs in there, but you'd DEFINITELY need to fabricate some kind of heatsink.

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Or the kit that goes under your bed rails to light that up. Thanks for the write up bill, this is awesome
No problem.

Bill

1996 F250 SC/SB 4X4 XLT
1997 F250 RC/SB 2WD project
2008 F350 CC/LB 4X4 DRW Lariat, 3" cow catcher mod
2008 Ranger SC FX4
Quote:
Originally Posted by weareweird69 View Post
If your posting pictures bill, everyone dim their screens, that CAT YELLOW is bright
Quote:
Originally Posted by Fordman247365 View Post
Is there anything you DONT take apart and **** with?
Quote:
Originally Posted by JJFLASH View Post
I still say that those Dodge mirrors have as much business on a OBS Ford as yoga pants have on a fat chick...my .02
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