17 replies to this topic

[chainber]

03 lib rx Recently i installed rear break light and indicator to led. well firstly the indicator flash very fast now, i know i need to put 2 resistor to fix the problem. but for the break light, its weird, whenever i press the break when my parking/headlight is not on, my head unit dims to when i turn my head lights on. can anyone shine some light what i need to do to fix this problem. thanks in advance J

[legacy rsk]

i did the same to my legacy brake lights and had the same problem so i just put the normal globes back in

[RX25SE]

Sounds like the brake light is feeding voltage back down the park circuit, simulating the park lights being turned on. Check the contacts on the base of the globes and see if they are jumping across the two contacts in the globe holder. Also check the globes are installed the correct way around. Stop/ tail globes have offset pins. If all that checks out fine, you may need to fit a diode to the park circuit to stop the back voltage. The flash rate of the idicators is fast because the LEDs draw less current and the flasher unit sees this as a blown globe. Using Ohms law, a 6.85 ohm (7 ohm is fine)resistor across each LED will restore the flash rate.

[chainber]

thanks guys for the quick reply, i m wondering whether fitting a resitor will help with the break light? Or is it ok to drive wif parking on 24/7 so it doesn't hurt the head unit lighting? or how to put a diode for the break light, any suggestion is appreciated. Thanks in advance again J

[RX25SE]

TBH I don't think much of LEDs but try this anyway.

In the line feeding power to the center of the indicators fit a 7 ohm resistor (one each side).
Click here for more about resistors.

In the line feeding power to the rear park lights from the front of the car (before where the loom feeds the other rear park lamp) fit a diode. This acts like a one way valve so it needs to be fitted the correct way around.
Click herefor more about diodes.

Just remember that most LED globes don't meet ADR compliance and therefore are unroadworthy.

[chainber]

any idea what diodes i need, like resistance or watts sorry didn't pay much attentions at school with this important stuff, didn't realise its actually useful, and any idea where i can get it in mel? jay car kinda don't stock this stuff. J

[DukeNik'em]

Is a break light the one that lights up when something is broken? Supercheap Auto, Autobahn, even Dick Smiths will have resistors and diodes, they are sold in a shit tin of places so wont be much trouble, look for where the fuses and stuff are hanging. If you really truly can't find any break into the Physic's lab at your local school. Nick

[RX25SE]

Jaycar do stock this stuff. For the diode a ZR-1014 should work. Resistor would have (I think) two black bands, purple band, black band and a silver band. I have found the sales people mostly helpful, just tell them what you a doing and they should be able to work it out. In the meantime, study Ohms Law!

[buzzda]

Is a break light the one that lights up when something is broken?

Ahahahhahahahahaha

[chainber]

what about a thing call flasher? where i locate the flasher and is it any LED flasher will work?

[RX25SE]

Why are you changing the flasher?

[chainber]

so the flash rate is slower, a led flasher will adjust the flash speed for led lights?

[RX25SE]

The flash rate of the idicators is fast because the LEDs draw less current and the flasher unit sees this as a blown globe.
Using Ohms law, a 6.85 ohm (7 ohm is fine)resistor across each LED will restore the flash rate.

The fix.

In the line feeding power to the center of the indicators fit a 7 ohm resistor (one each side).

[chainber]

so in your opinion changing the flasher is not a very good idea? the flasher i am thinking http://cgi.ebay.com/...=item2eaa633379

[RX25SE]

Might work. Costs 4 times more than the diodes. Still wont fix the BRAKE problem.

[skillionaire]

Hi, Chamber. Cheers, Nik

[chainber]

flasher instead of the resistor i mean, i know i need the diodes for sure. dont think its a good idea that the power go back 2 the head unit J

[RX25SE]

Might work.
Costs 4 times more than the diodes resistors.

Still wont fix the BRAKE problem.

EDIT: Due to being tired, overworked and underpaid.