Honda CX 500 Forum banner
1 - 2 of 2 Posts

·
Super Moderator
'84 CX650E that is evolving into a GL500
Joined
·
19,244 Posts
Are the front and rear brake switch wires connected at any point? I’ve followed the front switch wires all the way to the CDI didn’t find any place where they would intersect. Not sure what happened to the rear brake switch in the first place so I have no idea where it had been connected to.
The wires for the front and rear brake light switches are connected but it is inside the harness so you would have to peel back a lot of tape to get at that. And AFAIK the wires for them don't connect to the CDI.

The rear brake light switch is mounted to the frame with a spring connecting it to a lug on the brake linkage It is near the right footpeg on most models but I believe the CX500C has it on the left as in the pic below. In the pic you can see the wires attached to the switch (inside a black plastic sleeve) running behind the passenger peg mount and up behind the frame so if it is missing the wires from the main wiring harness that the switch plugs into should be in that area.


BTW: Welcome to the forum and welcome to the world of antique vehicle ownership (they own us, not the other way around). Your bike is about 4 decades old and may or may not have had all of the maintenance necessary to keep it safe & reliable so it is highly recommended to download the Factory Shop Manual for your model (available through the CX Wiki - link in my signature) and go through all of the service procedures, regardless of whether your bike has reached the specified mileage. You can also find a colour wiring drawing for your model and the Honda Wire Colors chart at the Wiki that can be useful for figuring out things like this.

I also recommend looking on all rubber parts with suspicion because rubber does not age gracefully. Check the date codes on your tires and replace them if they are over 5 years old no matter how good they look & feel (old rubber simply cannot flow around the irregularities in the asphalt well enough to grip, especially if it is cool or wet). If your bike still has the original rubber brake line(s) (should be replaced every 2 or 3 fluid changes = 5 or 6 years) I recommend shopping for modern stainless braided ones (they last practically forever and double the life of the fluid). And don't forget things like the rad hoses and the boot between the engine and swingarm (they can crack on the bottom where you don't see it).
 

·
Super Moderator
'84 CX650E that is evolving into a GL500
Joined
·
19,244 Posts
AFAIK the only connection between the Ignitech and the brake light switch is that it is recommended to get the power for the Ignitech from the black wire (switched power) that goes to the rear brake light switch.
The wires to the brake light switch should be that black power wire and a green/yellow that runs to the light.
 
1 - 2 of 2 Posts
Top