Information on wiring and relays

Don't know if the information exists in any form, as I haven't been able to find it yet, but figured I'd ask here.

I want to find information on how the flasher relay and the "auto-off" relay for the flashers on an 82' SECA work. I'm not looking for a wiring diagram, I have that, I am looking more for some explanation of how the "Auto-off" relay gets it's information for distance from the Speedo, and how it then interacts with the flasher relay to stop power to the flashers. If that is indeed how it works. I have an idea on fixing up a controller for the flashers that will allow the use of any kind of light for the flashers and sill have the "Auto-Off" feature.

Thanks guys!

 

http://www.xjbikes.com/Forums/viewtopic/t=14068.html

 

That partially explains how the relays work, but what I am interested in knowing is left out:

The part here of interest is:

The counter is the issue, how does it work, and what is it counting? From what I have read, the relay shuts off after 10 seconds and 150 ft. have been reached. Meaning that the relay will continue to flash after the 10 seconds, if you have not traveled 150 ft, or continue flashing if you travel 150 ft. but have not been flashing for 10 seconds.

I want to know where the relay gets the distance traveled. I assume it comes from the Speedo some how.

 

There is a reed switch on/in the speedometer head that does the "distance counting" and sends that info the the self-canceller via the white wire with the green tracer stripe.

 

Awesome! Chacal, do you know where I can find detailed info on the reed switch, or do you know how that works? Does it count turns of the speedo cable, then engage power on the wire to signal the relay?

 

I read around and it seems that the reed switch works by opening and closing the contacts on the switch as it revolves. So, I should be able to count the electrical pulses coming off the white/green lead to calculate distance yes? Just have to figure out how many pulses exist in a certain number of feet...

Sounds like I need to test some things....

 

It is one pulse per cable turn (360 degrees) And i always thought it was 500 feet before it shut off. Anyways, i think i need to pull mine as it has only self cancelled once in like a year lol

 

Sweet, Thanks!

My plan is to create a computer controller for the flashers, that will control rate of flash, length of flash (How long the light is lit for), auto-off, and make a setting for hazard flashers.