LED Pilot Light Problem

[Jim Niemeyer]

I need a little help. I know most will laugh, but little or no electronic background. So here goes.
I am adding handle grip heaters to my motorcycle. They have a High and a Low setting controlled by a SPDT toggle switch (ON-OFF-ON). I want to have an LED light for each level. Problem is, that when I wired them up as per attached drawing they both turn on at both heat settings. How do I get only the appropriate LED to illuminate for it's appropriate heat setting. Thanks in advance to all.
Jim

 

[cadstarsucks]

I need a little help. I know most will laugh, but little or no electronic background. So here goes.
I am adding handle grip heaters to my motorcycle. They have a High and a Low setting controlled by a SPDT toggle switch (ON-OFF-ON). I want to have an LED light for each level. Problem is, that when I wired them up as per attached drawing they both turn on at both heat settings. How do I get only the appropriate LED to illuminate for it's appropriate heat setting. Thanks in advance to all.
Jim

You are lighting them through the opposite heater. You need blocking diodes.

D.

 

[Jim Niemeyer]

Where would these diodes be in the circuit? Thanks for the reply. Jim

 

[Rolf]

I need a little help. I know most will laugh, but little or no electronic background. So here goes.
I am adding handle grip heaters to my motorcycle. They have a High and a Low setting controlled by a SPDT toggle switch (ON-OFF-ON). I want to have an LED light for each level. Problem is, that when I wired them up as per attached drawing they both turn on at both heat settings. How do I get only the appropriate LED to illuminate for it's appropriate heat setting. Thanks in advance to all.
Jim

Why not replace the switch with a DPDT and wire the LED's to the second sets of sw. contacts?

 

[Jim Niemeyer]

That would certainly work, but the SPDT it what came with the heater kit. Sometimes the simplest is the easiest. Thanks for the reply.

 

[Paul111]

**broken link removed**

Hi Jim, you could wire the leds accross the switch. A few milliamps will flow through the unselected heating elements as a consequence but I guess this will be insignificant (I am assuming there is a master on/off switch not shown).
Note that the led that lights will be the one wired to the unselected element and hence the lables look to be the wrong way around at first glance.
Cheers Paul.

 

[cadstarsucks]

Where would these diodes be in the circuit? Thanks for the reply. Jim

After the switch to prevent the unselected heating element from power the "unselected" LED.

D.

 

[Jim Niemeyer]

Thanks to all for the solutions!! My project is back on track!!
Jim