Hello there! I've recently bought a set of aux light to my beloved G650 GS Sertao. It came with it's own relay and fuse, and also a switch. I would like to get some help with the wiring, more specially, I want to connect the light switch after the headlight relay, so it can be turned on only, after the bike has ignition. Can anyone help me, which one is the headlight relay, or any point on the bike, which is only has power after ignition, and has some avaliable contacts? Photos would be appreciated. Thank you in advanve!
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Help with auxiliary lights wiring
- Thread starter Fandango
- Start date
Welcome to the forum.
Not sure what a Sertao is. But if you list the year and model, someone may provide a wiring diagram. Sadly, the 650 diagrams previously linked on BikeCliffs Website are dead ends in the links on the archived site in my signature. The service manuals there do have wiring diagrams in them near the end. To my knowledge, there are no wires that are hot only after the bike is running. There are many that are hit only when the ignition key is on.
That said, many models have an extra 12v switched brown wire in the headlamp bucket not connected to anything. Ground to whatever is convenient. Black w/white stripe are grounds on all models. All other wire colors also tend to be the same across all years and models.
Not sure what a Sertao is. But if you list the year and model, someone may provide a wiring diagram. Sadly, the 650 diagrams previously linked on BikeCliffs Website are dead ends in the links on the archived site in my signature. The service manuals there do have wiring diagrams in them near the end. To my knowledge, there are no wires that are hot only after the bike is running. There are many that are hit only when the ignition key is on.
That said, many models have an extra 12v switched brown wire in the headlamp bucket not connected to anything. Ground to whatever is convenient. Black w/white stripe are grounds on all models. All other wire colors also tend to be the same across all years and models.
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Here is a video tutorial for you.
Remember to seal all connections you make securely to avoid water penetration.
I have many times used vinyl electrical tape double wrapped, but have come to like using a product called liquid electrical tape.
Do not skimp with it and it will seal very well.
https://www.revzilla.com/common-tre...qMQyvztx2bX97YpuzLiJD3dl7iTepvtmgby9G2acdKUX8
Remember to seal all connections you make securely to avoid water penetration.
I have many times used vinyl electrical tape double wrapped, but have come to like using a product called liquid electrical tape.
Do not skimp with it and it will seal very well.
https://www.revzilla.com/common-tre...qMQyvztx2bX97YpuzLiJD3dl7iTepvtmgby9G2acdKUX8
Datsa Noydb
Forum Mentor
To the best of my (limited) knowledge, no GS ever left the factory with a headlight relay.
It's a matter of how much power is flowing through whatever switch you're using. Big power requires a big switch, if you use a smaller switch the contacts inside the relay do the work of handling that larger power flow.
Datsa Noydb
Forum Mentor
Very true, but has nothing to do with the fact that there won't be a headlight relay on the bike.
