Side Marker Lamps
I installed the Hella P/N HL81222 side lights with the silver background. I really like the size and shape of the lights but they are only available in amber, not red. In the US, per CFR Title 49/SAE J592e Standards, the rear side lights should be red. I’ve played with LED’s before so decided to swap the yellow (amber) ones for red.
I removed the rear lights and used a small screwdriver to gently pry the lens and break the glue bond from the housing. Then used the screwdriver to pry out the chrome insert (it’s only snapped in place). I scraped out the black rubber filler on the back and unscrewed the leads. At this point, the circuit board falls out of the housing.
I used a Kotto solder-sucker to remove the solder from around the pins then removed the amber LED’s. I installed three red LED’s, P/N OVFSRAC8 from Digi-Key. After the swap I thought they were too bright so I changed the ¼ watt resistors from 62 ohm to 220 ohm (2 each per light). I put the circuit board in the housing and snapped in the chrome insert. After using 1000 grit sandpaper to clean up the housing at the lens interface, and a final clean with alcohol, I used plastic glue to attach the lens. I cleaned the rubber residue from the leads, screwed the leads to the housing in the correct polarity (positive to black/white lead) and re-potted with RTV. The lights work and look great!
I have extra LED’s and resistors. If anyone else needs this done to the Hella HL81222 (silver background) or HL81221 (black background) side lights, I can do them for you. Send me a PM. ENJOY!
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