led indicators and load resistors

[DeanMember]

I got my bimbo daughter to tell me if my blinkers were working correctly on the trailer, yes no yes no :laugh:

ollie

[glennMember]

Trailboss wrote:

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boony wrote:

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:huh: :huh: :huh: WTF are you lot talking about:blink: :blink:

Thats funny, karma for that

TB

thank you oh trusted one:) no but really WTF, a resistor was what my x girlfreind was.

[Anonymous]

slug wrote:

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I forgot to mention That I reckon the load resistors should be fitted to the two wires that come from the blinker switch output, that feed the LHS and RHS blinker circuits. That way they will only become hot when power is switched to either side’s blinkers via the switch.

If you haven’t wired it like this then that is likely to be the cause of the heating. The blinkers (and resitors) should only see power when the switch is made.

If this is the way it’s wired then you power being fed to LED’s is what’s expected and the resisters are doing there job. Releasing energy through heat dissipation.

[drewMember]

menace wrote:

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well XY, being a sparky, i should know….but i dont:P

ummm, theres only 3 ways they could go i reckon.

the top kindergarden picture is in ‘parallel’, like the way you have it…i think.

the second is with the led first, then the resistor.
the third is with the resistor first.

note that the led has a polarity but the resistor wont, so maybe they should be like the third one..
did you try putting the resistor to the pos side?

i just called a very helpful parts supplier, sells led gear. looked it up for me, you wire it up the way Menace drew in the first diagram. and have 1 resistor for each side/ circuit.

other than that i assume that you would fit it down stream of your switch and could be grounded to the chassis. he read that if you earth it to the chassis it could create a poor ground and have problems.

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