Fog lights to follow high beam

[interactive3]

Originally Posted by Heimdall

Thanks for all the help guys, finally got around to it.
Thought I'd post how I did it, if I did it right someone might benefit from it as a reference and if I screwed it up I'm counting on you to save the bike (still in winter storage) before I fry it. 

Could not find a better way so I spliced in to the white/blue high beam cable at the connector behind the headlights (removed them to get to it).

So now I can operate the fog lights (which aren't really fog lights at all but cree LED aux lights in OEM fittings and harness) in day time with the low beam but have the luxury of not needing to operate two switches to get maximum light output at night.
I'd say total cost of the entire project was < €10 so money well spent. 

Thanks for posting this. I had Clearwater LED Lights on my 1050 and loved the change to full brightness when the high beams were triggered.

[dasf]

Have a Triumph Tiger 800 XCA 2017 with OEM Fog (LED) installed from factory. Now trying to get a relay into the harness so I don’t have to hit two switches when going from High- to Low beam at night. Planning to break up the +12 v circuit to the fog lamp at the Fog light switch connector at the right side of the cooler ( see picture) but got into a problem. When testing the cables at this connector I found that red cable have 12 volt when the fog light switch is on AND off.  How come? Where can I break up the circuit and place the relay?

[dasf]

Did some more testing and found that the foglights still function as they should, on and off,  via the handlebar switch if I disconnect  connector 4. Don't understand........

[pme]

if it the same design as the 2018 model, its all controlled via a relay and the ecu. If not is possible that the system applies ground via the relay/switch combo, the old horn used to be that way, when you pressed the horn button the ground is made and the horn sounds. 12v +ve is constant, that was why you could use the +12v on the horn connector for a swiched 12v supply to a gps etc..

[dasf]

As the fog light on my Tiger 800 XCA 2017 seems to be controlled by the ECU I had to come up with a DIY solution to get my DRL and fog light work as I and the police want.

Now at daylight the DRL and foglight (if on)  is on at high- and low beam and
at night the DRL and foglight (if on) is on at high beam and off at low beam.

Also the DRL and foglight (if on) at night is controlled by the high/beam switch and I don’t have to use two switches.

The needed toggle switch and relays is mounted non visible but reachable behind the left lower panel.