Sounds like the load resistors in the light assemblies are the wrong value. Try putting 12v directly across the lights and see how bright they are. You may need someone who knows a little about car electrics to give you a hand.
D-Max 50/50 Lights... Not very bright?
Do the LED's have a greater load than standard bulbs? I'll try wiring them straight up to a 12V supply first, but I'm wondering, I have interior led strips in the door cards that come on when the main beam is turned on, is it possible they're robbing some power from the rear lights?
yeah you might be taking power from the rear
mine are led and insanely bright its nearly blinding for people behind me at night
CMR
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Mine were very bright
They're bright at night, but ****e at day. The offside replacement light arrived (other arrived broken), fitted that and it's exactly the same. So seems it's not the units. Need to get them hooked straight up to a battery.
I wondered this as well, Ive noticed mine not being as bright as they should be for daytime operation. There is another style LED taillight and the LED portion seems to be a better design and for light output. I have been contemplating on finding a set to retrofit into the 50/50's...
Parky did you ever find out what was at fault?
Only because I'm having the opposite of your problem lol mine look too bright, like as if I were hitting the brake pedal, and no change when pressing the pedal.
Same here, seems weird. It'll be kinda hard to exchange them since I bought them from Japan lol I hope dmax usa will exchange them if I don't find anything wrong with my circuit.