load resistors- turn signal

[mookie]

anyone know of a specific CHEAP resistor for aftermarket signals?
i can't see spending 30 dollars for a pair +shipping.

[scooterwerx]

just get an electronic flasher designed for leds, instead of the thermal one. those resistors are like putting a toaster inline on a circuit. i found mine on ebay for 8 bucks or so.

[mousewheels]

Edit - scooterwerx got in first! Electronic Flasher's the way to go.

Clivester posted an low cost electronic flasher in this thread.
http://www.hondaspree.net/phpBB3/viewto ... her#p81758

[scooterwerx]

haha sorry, didnt mean to steal your thunder! i messed with those silly load resistors for a while, only to find a much easier, simpler way!

[akskoot]

Hope I'm not threadjacking, but on a similar note. What size resistor would I use to simulate a light bulb that isn't there. I shaved my front turn signals but ended up having to buy little bulb holders, wire em up and stuff them in the body in order to get the rear signals to work. Ideally I could just connect the pos and neg of the turn signal, but there's no flasher action without the bulb resistance. Thanx!

[noiseguy]

Equations:

V = IR

Voltage = Current * Resistance

P = VI

Power (W) = voltage * current
-----------------------
V = 12V

P = Replaced bulb wattage (say 6 W)

Solve.

Note you'll need a fat resistor to be able to handle the current.

[mookie]

just looking for a cheap resistor from Radio Shack or whereever to solve the no flash i have with little stalk type turnsignals.

[noiseguy]

Here's one. Close enough to what you need.

http://www.radioshack.com/product/index ... Id=2062291

[mousewheels]

haha sorry, didnt mean to steal your thunder! i messed with those silly load resistors for a while, only to find a much easier, simpler way!

Ha - not much thunder in resistors, guys here have so many technical talents Go werx!

Mookie - the 10ohm resistor works out to a 14w equivalent load at 12v. If your LED's draw little current, there may still be a no-flash condition. This is because the OEM flashers seem to not flash when a bulb is burnt out, and 14W is around the wattage of a single turn signal lamp. Easily solved by another resistor in parallel.

Simpler formula for Resistance, knowing Voltage (E) and Power:
Resistance = (E * E) / Power

To exactly determine the load resistor, you'd factor in the turn signal bulbs and replacement LEDs
Below are example values only:
Given: 2 (17 w) turn signal bulbs, replacing with 2 - (3w) LED's
Power draw for resistor load = (2 * 17w) - (2 * 3w) ==> 28 w

Resistance = (12 * 12) / 28w ==> 5.14 ohms ===> 5.0 ohms closest cheap commercial part...

[odinxxix]

i posted a thread in the general i found an led flasher on a web site. i even put in the part number, thought maybe somebody would heve checked it out by now.

[mookie]

i did check it out and thanks for the link. the one i saw was a 3 spade type and my relay is 2 spade. the 1.99 R. Shack one's cheap enough to take a risk with .Thanks yall for the help.

[Kenny_McCormic]

Just solder some blinking leds into old bulb bases, leave the flasher in, it wont hurt anything.
http://ledz.com/?p=leds.blinking

[mousewheels]

Mookie - been following up getting info on bulb wattage and such for those following your resistor load path.

The Spree uses 23 watt bulb as shown in the schematic, and verified by taking a picture of a Spree turn signal bulb. A 10 ohm resistor is not going to simulate a single bulb. Given the flasher does not want to flash with one bulb burnt out we'd need a smaller resistor. An off the cuff guess is around 36w to 48w --> 4 to 3 ohms.

But then arm chair theory is just that - how things are working out for you is the most important part. Hows it going?

[mookie]

Thanks for the help sir.the lowly YAMAHA Jog has been pushed to the side since i stared the long path towards tuning the 96 E /big bore money pit!
by the way the Jog is wired with 4 3 watt jobbies in mini stalks.

there may be issues with the lighting coil,(IF there is one) since the headlight is casting a faint amber very weak light. taillight/stop are bright as normal though...