Vintage BMW Motorcycle Owners

First place I would look is the ignition switch. It is not hard to get a wire on the wrong pin.
Other than that, check the places the gray, and gray/black wires are plugged into, something may be off. Good luck, St.

Take a look at the factory relay, it may have the internal diagram printed or scribed on the side. St.

With the proper relay set up for a high current draw side, you could run an air compressor and use air horns. LOL St.

I will take Bourbon as second favorite.

Good news, St.

I am posting late in the thread sorry. Over the years of riding I have had similar failures. Sometimes the issue is a simple fix of just cleaning plugs and contacts.

Start with the simple stuff first, check the connections. St.

Scotch? LOL, sometimes the crimped on connectors are the first sign of "previous owner's disease" The wiring diagram is correct, White, Red, Yellow, black/gray. So the other is wrong, it is from the universal fit fairing. I will bet if you find the factory harness it might solve some of yo...

I just got done looking at the R90x website, very interesting stuff there. St.

Not to be a jerk or burst your bubble however, parts to do what you want to do may be difficult to find. I say this as you are not the only one who wants to go dual. The good news is there maybe parts out there from someone who switched from the ATE dual brakes to Brembo brakes. I did that swap on m...

I am not familiar with GS bikes however the other bikes sometime have the VIN number stamped on the right side steering head boss. St.

LOL, if the previous owner was in the headlight shell doing any "repairs" or modifications, it could well look like a bundle of jumping snakes. Everything is however pretty easy to figure out. BMW color coded everything so as long as your are dealing with factory wiring, everything has its...