Hi,
the original flasher relay will not work with 6 Watt lamps - you need to have the original 21 Watt or an electronic flasher relay. If you have mounted LED flasher, either resistors or electronic flasher relay should be used.
The horns are not connected with the flasher.
Rgrds.
KH

Hi, I assume that it will work with the 21 W bulbs. However, the cancelling unit may not work with an electronic flasher relay. Unfortunately, I do not know the cancelling unit since it is not used in most of the European TR1's. And the technical Information on this web page does only show the wiring diagrams (you may have a look into these files) but not the internal wiring of the components. If you Change back to the original flashlights, will this work?

Let's wait for Odin, he may have a solution.

Regrds
KH

Thanks a lot guys.Saturday I have a little more time to spend with my tr1 and I will find the better solution (changing the 6w with 21w or search for another relay).the tr1 I have was of my friend's father. It was hidden in the open air for more than ten years and then in a garage for another ten years... not used for all the time.it has only 8400 miles but I worked many hours to bring it back to life   yesterday I pushed the starter for the first time after all those years....five times and the engine runs perfectly. I can't believe at my eyes.now I have to solve this little problem,install the new speedometer with km/h scale because the original one was in miles, and then go out for a ride.I'm very excited and I hope that all the things works without surprise
So....Thank you again guys for the help.

If you want to use another speedometer, but you must then make trick for the indicator warning light, because the new flasher relay will have problems with new cable management

Problem resolved!!!I change the 6 watt lamps with 21 w and now the turn signal works.thanks to everybody for the help.