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May 5, 2019 | 06:54 PM

#46

ZombieF150

Elder User

Joined: Sep 2018

Posts: 735

Likes: 8

From: NC

as mentioned, diodes only allow power to flow one way, normal incandescent bulbs are resistive loads and could care less which way they are in

May 5, 2019 | 07:00 PM

#47

torq'ta 5 8

Lead Driver

Joined: Jan 2019

Posts: 5,083

Likes: 868

From: N.W. Alabama

I wonder how many people took bulbs back because 'they dont work' was why I posted what happen to me, bulb doesnt show a diode (schematic symbol) either

May 5, 2019 | 07:39 PM

#48

AK FORD GUY

Cargo Master

Joined: May 2009

Posts: 2,587

Likes: 47

From: Eagle River, AK

Quote:

Originally Posted by torq'ta 5 8

I understand they are LED(light emitting diode) but nothing in instructions says which leg goes to positive, they don't show polarity on my diode check on meter, just luck if you put in right or wrong?
instructions dont say pull and turn 180*, I wonder if this could be some of the other post guy with brake/turn LED issue?

Very, very possible.

I think it is one of those "common knowledge" things for those of us that have either done it or read about it, but definitely not something that all the manufactures note on their packaging.

Very good point to being up and may help others in the future that read this now, or use the search function later.

May 6, 2019 | 06:48 AM

#49

TooManyMIce

Tuned

Joined: Jan 2018

Posts: 414

Likes: 42

From: State of Confusion

Also worth noting that some LED bulbs have a rectifier built into the assembly so that they'll work either way. Others do not and must be installed the right way around.