I have a custom Yamaha XS750 that has no labels for the warning lights. Currently the middle red one is on (and stays on when engine running) and I have read in a few places that this could mean oil OR brake light issues. 

I have only seen this in relation to earlier models though,  can anyone confirm it is the same for the 1980?

Thanks

Edited December 8, 20204 yr by mxhoney
Add photo

Does it look like this?

YAMAHA XS750 XS850 GAUGE INDICATOR PILOT LIGHT PLASTIC COVER 1977 1978 - 1981 | eBay

If so, it's the oil light...

9 hours ago, Snakebite68 said:

Does it look like this?

YAMAHA XS750 XS850 GAUGE INDICATOR PILOT LIGHT PLASTIC COVER 1977 1978 - 1981 | eBay

If so, it's the oil light...

Hi thanks for the reply,

Not really, I have included a photo below. Unlike that link the neutral light is on the tachometer and there is only one indicator light (the top one) that flashes for both indicators.

It looks more like the one in this link https://www.ebay.com/itm/NOS-Upper-Pilot-Box-Idiot-Warning-Light-1978-1979-Yamaha-XS750-XS750SE-XS750SF/154006340290?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20160323102634%26meid%3Dc34c176a93a442368eb44748f6a02d1e%26pid%3D100623%26rk%3D1%26rkt%3D5%26sd%3D372242466189%26itm%3D154006340290%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganic%26brand%3DYamaha&_trksid=p2047675.c100623.m-1

... but all the service documents say 1980

That appears to be a custom plate.
Take it off, there may be something underneath it...

On 12/9/2020 at 10:40 AM, Snakebite68 said:

That appears to be a custom plate.
Take it off, there may be something underneath it...

Thanks for the suggestions. I replaced the tail light and the warning light has gone off some I guess there is my answer