led flasher resistors

[Peter-C]

My setup is that the front and repeaters are ordinary lamps but the back are leds. It appears that I need resistors wired in parallel with the leds. Does anyone know if they go as close to the lamp as possble or can you connect them anywhere in the loom as all of the lights are in parallel. Hope it makes sense.

Cheers

Peter

[mark]

My car is the same using led at the rear, I never really thought about location and fitted them to the inside of the rear tub quite close to the actual lights, I would imagine they will work the same regardless of location

They do get quite hot though so make sure they are in an appropriate position wherever you put them

[Peter-C]

Cheers Mark

[alga]

Hey, the resistor need needs to be in series with the LED, not parallel! LEDs typically work with a 2-3V voltage, depending on type. The resistor is needed to take the rest of the voltage. http://ledz.com/?p=zz.led.resistor.calculator

[davedew]

The resistor is wired in parallel as it is there to apply the extra load that the relay needs to see to flash correctly, not drop the voltage to the led's.

The other option is to buy a dual load indicator relay. These have a fixed flash rate and will work with either led's, bulbs, or a mixture.

Something like the below. This should be suitable for use in the standard Sierra wiring setup.

http://www.ebay.co.uk/itm/LED-FLASHE...em5d2f4 c7b2f

[rich]

im using a 3 pin led flasher unit got off ebay for about £5, just plug it in
make sure the pin configuration is the same, some are different

[Peter-C]

Just tried one connected under the scuttle WORKS FINE !!!

Thanks lads

[robo]

Originally Posted by davedew

The resistor is wired in parallel as it is there to apply the extra load that the relay needs to see to flash correctly, not drop the voltage to the led's.

The other option is to buy a dual load indicator relay. These have a fixed flash rate and will work with either led's, bulbs, or a mixture.

Something like the below. This should be suitable for use in the standard Sierra wiring setup.

http://www.ebay.co.uk/itm/LED-FLASHE...em5d2f4 c7b2f

I reckon that relay is the kiddie. Its the proper job and will keep the legal 60/120 flashes per min where they belong. not saying dont use resistors but all the guess work is gone using that relay.

Bob