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Problems with LED taillights
- Hank the Truck
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11 years 4 months ago #102332
by Hank the Truck
Problems with LED taillights was created by Hank the Truck
Hello,
Ive recently fitted LED taillights to my 2012 Hino 616 "Trev".
Ive now got the issue of the quick flashing indicators, but I can fix this by putting in LED globes in all indicator positions.
The bigger problem Ive got it with the Brake lights now being LED the ABS reads the lower Wattage as a failure and brings up the ABS and Brake Fail lights on the dash.
Has anyone else dealt with this and found a solution? I understand a load resistor across the brake light to earth wires can fix this?
Any help very much appreciated.
Ive recently fitted LED taillights to my 2012 Hino 616 "Trev".
Ive now got the issue of the quick flashing indicators, but I can fix this by putting in LED globes in all indicator positions.
The bigger problem Ive got it with the Brake lights now being LED the ABS reads the lower Wattage as a failure and brings up the ABS and Brake Fail lights on the dash.
Has anyone else dealt with this and found a solution? I understand a load resistor across the brake light to earth wires can fix this?
Any help very much appreciated.
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11 years 4 months ago #102333
by Swishy
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST
There's more WORTH in KENWORTH
Replied by Swishy on topic Re: Problems with LED taillights
U can also fit a inline globe/Festoon type light to draw more current
Did this to a Kenny up under the dash coz without trailer on the flashers on truck.......wouldn't
Did this to a Kenny up under the dash coz without trailer on the flashers on truck.......wouldn't
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST
There's more WORTH in KENWORTH
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11 years 4 months ago #102334
by bigcam
Replied by bigcam on topic Re: Problems with LED taillights
Mate, Hino's are the worst Jap truck to put LED'd on. Go down to Ashdown's, they have LED resistors, make sure you get the 24V ones, you need 2 for the tail ilght circuit, at least 1 each for the indicators and I think it is 2 for stop lights as well.
If you don't do this the tail lights will glow when the engine is running, but not when it is stopped and all sorts of other weird things. We fit LED's to a lot of them. Fitting a trailer brake kit is also a joy, tell me if you ever find a stop light switch.
If you don't do this the tail lights will glow when the engine is running, but not when it is stopped and all sorts of other weird things. We fit LED's to a lot of them. Fitting a trailer brake kit is also a joy, tell me if you ever find a stop light switch.
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11 years 4 months ago #102335
by Beaver
Beaver@ Museum of Fire
Replied by Beaver on topic Re: Problems with LED taillights
Flasher cans rely on current flow to work properly. LEDS don't draw enough current to make this happen.
Apart from wiring a normal globe in the circuit somewhere, you can buy "dummy load" resistors, or flasher units designed for LEDs, presumably have the resistors built in or use a different method of switching.
Apart from wiring a normal globe in the circuit somewhere, you can buy "dummy load" resistors, or flasher units designed for LEDs, presumably have the resistors built in or use a different method of switching.
Beaver@ Museum of Fire
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11 years 4 months ago #102336
by bigcam
Replied by bigcam on topic Re: Problems with LED taillights
Beaver, you are right with the flashers, but a Hino has all sorts of weirdness built in, you need to use the resistors on the stop light circuit as well as the park light circuit. as well other wise the lights come on when the motor is started.
The LED flasher can is actually a different type and does not contain resistors.
I've also been told It is also technically illegal to fit LED flashers and resistors as it is an ADR that the driver must have some sort of indication that a bulb is blown, which is why the old style flashers go faster with less load in the circuit.
The europeans and a lot of cold countries still prefer bulbs. I've been told this is because a bulb will melt snow when it is illuminated, of course it is little use here with rough roads shortening bulb life and long trailer combinations.
The LED flasher can is actually a different type and does not contain resistors.
I've also been told It is also technically illegal to fit LED flashers and resistors as it is an ADR that the driver must have some sort of indication that a bulb is blown, which is why the old style flashers go faster with less load in the circuit.
The europeans and a lot of cold countries still prefer bulbs. I've been told this is because a bulb will melt snow when it is illuminated, of course it is little use here with rough roads shortening bulb life and long trailer combinations.
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11 years 4 months ago #102337
by atkipete
Replied by atkipete on topic Re: Problems with LED taillights
You just reminded me I have driven a couple of Jap trucks where there was a second switch ( ex factory) to turn the parking lights on. There is the normal way ie via the headlight switch plus another way. On the Hino I think you pulled the hazard light switch forward or something. Cant remember exactly how on the other truck ( A Mitsi) but it was built into one of the other switches. Maybe some legislative requirement in Japan.
So if you ever get a Jap truck where the parking lights stay on with the headlight switch off, go looking for that other switch.
So if you ever get a Jap truck where the parking lights stay on with the headlight switch off, go looking for that other switch.
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11 years 4 months ago #102338
by Beaver
Beaver@ Museum of Fire
Replied by Beaver on topic Re: Problems with LED taillights
On trucks in Japan, the three centre lights on the cab roof are GREEN and wired up to a speed detector. Not sure what the settings are, but the faster you go, the more lights come on.
Squential turn indicators ( 3 amber each side at the rear) are also quite common on trucks and buses.
Squential turn indicators ( 3 amber each side at the rear) are also quite common on trucks and buses.
Beaver@ Museum of Fire
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11 years 4 months ago #102339
by Beaver
Beaver@ Museum of Fire
Replied by Beaver on topic Re: Problems with LED taillights
A lot of cars these days seem to have stop-light failure detectors.
A friend of mine has a Kia, and it won't even start if a globe has blown.
My 1970s Volvo car had globe failure detection with a warning lamp on the dash. All the lights on the RHS were wired separately to the lights on the LHS. A magnetic reed switch was mounted between the two looms - when the current on both sides was the same the switch was "neutralised"; a reduction on one side from a globe failure caused the switch to trigger and close a contact to the lamp. Fairly basic, but was OK as long as you didn't have failures on both sides simultaneously. Even unbalanced wattages would set it off.
A friend of mine has a Kia, and it won't even start if a globe has blown.
My 1970s Volvo car had globe failure detection with a warning lamp on the dash. All the lights on the RHS were wired separately to the lights on the LHS. A magnetic reed switch was mounted between the two looms - when the current on both sides was the same the switch was "neutralised"; a reduction on one side from a globe failure caused the switch to trigger and close a contact to the lamp. Fairly basic, but was OK as long as you didn't have failures on both sides simultaneously. Even unbalanced wattages would set it off.
Beaver@ Museum of Fire
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11 years 4 months ago #102340
by Beaver
The answers are probably already above, but even all LEDS will not solve the problem, at best will just make them flash even quicker.
Beaver@ Museum of Fire
Replied by Beaver on topic Re: Problems with LED taillights
Ive now got the issue of the quick flashing indicators, but I can fix this by putting in LED globes in all indicator positions.
Any help very much appreciated.
The answers are probably already above, but even all LEDS will not solve the problem, at best will just make them flash even quicker.
Beaver@ Museum of Fire
Please Log in to join the conversation.
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