markcunningham 10 Posted September 11, 2017 Just bought new tail led lights that seem to be integrated, meaning resistors on a pc board I believe. Has anyone bought this setup and how they installed them?! With lights off I have right turns normal and left are dim. Have stop leds when lights off but not while switched on. Same brightness off or on but no stops. Don't have center lights or third light. Thought maybe there an adaptor or something Sent from my iPhone using Tapatalk Pro Sent from my iPhone using Tapatalk Pro Quote Share this post Link to post Share on other sites
GrahamU 5 Posted September 21, 2017 How have you wired them ? Not sure what your lights have come with but in an ideal world, LEDs should be run of a switched power supply at high frequency (PWM) otherwise they will dim with use Quote Share this post Link to post Share on other sites
markcunningham 10 Posted September 21, 2017 Well there in limbo right now and not wired in just yet. I just them plug and play according to the Bentley wiring diagram. Make shift wired to factory connectors. Only one side was dim Front to rear. So you say I need a PWM?! What is that and where can I get it. The other issue was no stop lights while in on position but while off I had stop lights. Had no center or third light. Sent from my iPhone using Tapatalk Pro Quote Share this post Link to post Share on other sites
GrahamU 5 Posted September 21, 2017 Sounds like they are not plug and play or maybe the earth is a bit dodgy LEDs need a driver circuit otherwise they burn out over time and get dim, had a quick google and this explains a little https://electronics.stackexchange.com/questions/164078/why-is-pwm-used-to-control-leds-even-when-theyre-only-used-on-or-off Quote Share this post Link to post Share on other sites
markcunningham 10 Posted September 21, 2017 Ok I appreciate your input and will take this advise. Sent from my iPhone using Tapatalk Pro Quote Share this post Link to post Share on other sites
