Tail Light issue after LED install

[perryg13]

2007 FX4 ranger

So I installed all LEDS except side marker lights on front. I put the new EP27 flasher in to stop the hyper flash in blinker. Everything works fine when I have my headlights off. When I turn headlights on and try to use my blinker, what ever side I signal to loses the entire tail light. This only occurs when headlights are on. I don’t lose headlights but front blinker won’t flash and tail light shuts off completely.

 

[franklin2]

Your new bulbs are not making good contact in the edge of the sockets in the rear. The lights will act like that when they lose the ground to the bulb/socket.

 

[perryg13]

Your new bulbs are not making good contact in the edge of the sockets in the rear. The lights will act like that when they lose the ground to the bulb/socket.

For some reason I was thinking that it was new to the side markers not being led and drawing too much current. So would you suggest that I just unplug and plug back in or?

 

[franklin2]

Definitely eyeball the socket and the bulb. Your bulbs are dual filament, there will be 3 connections. 1, the brake turn filament, 2. a common ground connection and 3. the taillight or running light connection. Don't surprised too if you figure out the bulbs are bad, this stuff is made in China and doesn't work that great sometimes, even though you spent good money on them.

What happens, you use your brake or your turnsignal, the power runs to the back, runs through the brake/turn filament, and then it looks for a return path for the circuit, which should be ground. But it can't find the ground. So it makes it's own return path, going backwards up the taillight filament in the bulb, and then goes backwards up the circuit to the front and eventually finds a return path of sorts. It's probably not as bright as it should be.

Then you turn the headlights on. This puts 12v on the taillight circuit. So now the turn circuit that was running backwards up the taillight circuit, bumps head on into the 12v coming back from the taillight circuit. So no where to go, the turn/brake circuit goes dark.

 

[perryg13]

Definitely eyeball the socket and the bulb. Your bulbs are dual filament, there will be 3 connections. 1, the brake turn filament, 2. a common ground connection and 3. the taillight or running light connection. Don't surprised too if you figure out the bulbs are bad, this stuff is made in China and doesn't work that great sometimes, even though you spent good money on them.

What happens, you use your brake or your turnsignal, the power runs to the back, runs through the brake/turn filament, and then it looks for a return path for the circuit, which should be ground. But it can't find the ground. So it makes it's own return path, going backwards up the taillight filament in the bulb, and then goes backwards up the circuit to the front and eventually finds a return path of sorts. It's probably not as bright as it should be.

Then you turn the headlights on. This puts 12v on the taillight circuit. So now the turn circuit that was running backwards up the taillight circuit, bumps head on into the 12v coming back from the taillight circuit. So no where to go, the turn/brake circuit goes dark.

Even if they are all led’s? I’ll double check all of this