On those very, very, very rare occasions that I actually pass another vehicle on the highway, The driver of the other vehicle will blink their headlights to signal me its ok to pull back in the lane. The normal response is a “thank you”, by blinking my tail lights or brake lights.
A tap of the brake switch (unfortunately, it disengages the Cruise control) or simply flipping the lights switch to ON then back to off will do it. If its night turning the lights off also turns the headlights off.
SOLUTION – A momentary switch that will blink the tail lights, regardless if the lights are on or off.
If the lights are on, the blink switch turns them off. If the lights are off, the blink switch turns them on. Here’s how it works
DESCRIPTION
The trucks light switch controls the “Light Relay”. the BLINK switch controls the “Blink Relay”.
These two relays act like a three way switch. notice the normally open and normally closed contacts of the two relays are connected together, but they cross over.
Lights Off – Blink (turns lights on)
The Light Relay is de-energized, when the BLINK switch is pressed, the Blink relay energizes. Power then flows into 30 and out 87 on the Blink relay. it then flows into 87a and out 30 on the light relay. The light are connected to 30 on the light relay and the lights will light.
Lights ON – normal
The Light Relay is energized, the Blink relay is de-energized. Power flows into 30 and out 87a on the Blink relay. It then flows into 87 and out 30 on the light relay. The light are connected to 30 on the light relay and the lights will light.
Lights ON – Blink (turns lights off)
The Light Relay is energized. the power that was being supplied to pin 87 from pin 87a on the blink relay is no longer there and the lights turn off.
INSTALLATION
On the light switch you will need to tap into the Tan wire that has a white stripe. This wire supplies power to the light switch all the time (pin 13)
The Brown wire coming off of pin 14 of the light switch needs to be cut. The side that is connected to the switch gets spliced into the Light Relay pin 85, this will energize the relay whenever the light switch is turned on. The other side of the wire that goes to the lights will get spliced into pin 30 on the relay. This will be the new source of power for the lights.