cruiseroutfit
Well-known member
I'm fairly confident around vehicle electrical systems, I've had some basic electrical engineering courses as well as plenty of experience with general auto repair and accessory installation, aux. lights, dual batteries, etc. However I'm stumped, am I over thinking this?
Background:
I'm installing in-cab winch controls for my Warn 9.5ti, using a power switch, and a DPDT switch to handle the "5-wire" system that warn utilizes. This is all fine and dandy, however the 9.5ti winch has an overheat sensor (they call a Thermometric Indicator). Basically the sensor causes a LED to flash in the remote when the motor reaches a temp that could begin to cause damage. Easy still right? Well the way Warn wires the LED according to their schematic diagram has me baffled.
Here is the diagram:
Where I'm confused:
So the anode side of the LED is constantly powered with 12V+ via the white wire the connects to the battery, though there is a 1k-ohm resistor inline with the input, makes sense the LED would need the current knocked down. The cathode side of the LED is constantly grounded by hooking to the red wire. So that would tell me the LED is constantly powered right? So how does the temp switch (marked TPD) on the diagram cause the LED to NOT emit light by intersection on the anode side AFTER the resistor. Furthermore, how does it cause it to flash?
Warn nor any Warn repair centers I've spoke with have every really looking into it (well not any of their customer service reps that is). I want to have the overheat LED in my in-cab controls, just as it functions on the remote. I could dissect a remote, but I don't want to ruin it just to figure out how their wiring works (especially when I have a schematic already). Thoughts???
Background:
I'm installing in-cab winch controls for my Warn 9.5ti, using a power switch, and a DPDT switch to handle the "5-wire" system that warn utilizes. This is all fine and dandy, however the 9.5ti winch has an overheat sensor (they call a Thermometric Indicator). Basically the sensor causes a LED to flash in the remote when the motor reaches a temp that could begin to cause damage. Easy still right? Well the way Warn wires the LED according to their schematic diagram has me baffled.
Here is the diagram:
Where I'm confused:
So the anode side of the LED is constantly powered with 12V+ via the white wire the connects to the battery, though there is a 1k-ohm resistor inline with the input, makes sense the LED would need the current knocked down. The cathode side of the LED is constantly grounded by hooking to the red wire. So that would tell me the LED is constantly powered right? So how does the temp switch (marked TPD) on the diagram cause the LED to NOT emit light by intersection on the anode side AFTER the resistor. Furthermore, how does it cause it to flash?
Warn nor any Warn repair centers I've spoke with have every really looking into it (well not any of their customer service reps that is). I want to have the overheat LED in my in-cab controls, just as it functions on the remote. I could dissect a remote, but I don't want to ruin it just to figure out how their wiring works (especially when I have a schematic already). Thoughts???
