XT660Z Tail Tidy Brake Light Issue

[Eireocean]

Good Day,

I recently purchased and installed the following ... 7 week backorder :

https://www.off-the-road.de/en/news...cl.-number-plate-holder-yamaha-xt-660z-tenere
A friend and I did the installation. He is very efficient with regards electronics. Now I must add that the reason I made the prurchase was the original tail from the bike broke and was not repairable.
Now the issue that is being experienced is when the ignition is on, the brake light illuminates, however, when pressing either the front or back brake levers, the break light does not increase in intensity. I did contact the supplier, not very helpful. Is anyone familiar with electronics that would know a fix.
We have been discussing maybe trying a resisitor as maybe the led's are running at max illumination hence when using the brakes it does not illuminate further ?

Much appreciated.

Regards

 

[Dux]

 

[Eireocean]

 

[Dux]

 

[Eireocean]

 

[sidetrack]

 

[Eireocean]

 

[sidetrack]

 

[Dux]

 

[Eireocean]