RC51 Forums banner

1 - 12 of 12 Posts

·
Registered
Joined
·
140 Posts
Discussion Starter #1
Can anybody tell me what the relay on the left side of the bike, just ahead of the radiator is for? I discovered it is smashed open and want to replace it. Everything seems to work except the brake lights and the high beam. So another question would be where is the brake light relay? These are the last two niggles before the RC is back on the road. Any info helps. Thanks everybody.
 

·
Registered
Joined
·
170 Posts
99% sure it's the high beam relay. Try and download the service manual, it was pretty useful when I was removing things like that on my track bike.
 

·
Registered
Joined
·
170 Posts
ron ayers / local dealership / rc51parts.com, pretty sure it's an inexpensive part. (Most of the relays on the bike are actually the same part #)
 

·
Super Moderator
Joined
·
6,481 Posts
Most (but not all) of the relays are the same as the headlight relay, which makes troubleshooting a bit easier.
 

·
Registered
Joined
·
140 Posts
Discussion Starter #6
Thanks guys, I was on ronayers.com and couldn't find the headlight relay on the wiring harness diagram they have. So I am at a loss as far as what to do. Do you guys know what the part # is? Also, is there a relay for the break lights? If so, where is it? Thanks for any info.
 

·
Super Moderator
Joined
·
6,481 Posts
Total, 4 relays that are the same.
Part number: 38501-GN2-014

SP2 Front Wire Harness, relay Item 8.


SP2 Rear Wire Harness, relay Item 15.
 

·
Registered
Joined
·
47 Posts
As far as I can tell from the service manual, there is no relay for the brake lights. There is one fuse which feeds the turn signals, front and rear brakes, and the horn. If the horn, the signals, and the brake lights don't work, the fuse would be my first guess. Then move on to the front brake switch, then the rear brake switch. It would be pretty strange (though not impossible)that both switches would go at the same time.
 

·
Registered
Joined
·
140 Posts
Discussion Starter #11
Thanks everybody, I really appreciate all the responses. Is there a "fast" or "easy" way to check the brake swithces? The horn and signals et al work, so it's not the fuse.
 

·
Super Moderator
Joined
·
6,481 Posts
They're just switches.
Disconnect the wires, connect a continuity meter onto the leads and test each switch. It either works or not.
In case of the rear brake switch, make sure it's adjusted to actuate when the brake pedal is pressed. It sometimes vibrates out of adjustment.
 
1 - 12 of 12 Posts
Top