OK.. this may seem daft but is it possible..

I have a set of BG83 switched live switches wired in at the moment with a push horn on the indicator arm.

The wiper arm is working but looks very old and grubby...

I now have a set of BG87 switches that are in excellent condition but do not have a horn push. - I also have no central horn push on the steering wheel...

What I would like to do is keep the bg83 indicator side switch ( with the horn push ) but fit theBG87 wiper arm switch ( switched earth)?

Or should I just fit the BG87 swithches and put a horn push button on the dash?