Simple enough problem to fix, but very hard to explain if you are not the one there fixing it i guess.
Just use the SAAS horn button, you connected it up if its working ok wasn't it, you could always cheat and use a bit of silicon on it, then center it, whack on masking tape and let it dry overnight if its a loose fit, or worse case this horn button doesn't it fit at all?
Obviously when you connect the two wires from boss kit together or connect to saas cap connections, you said horn works as normal, is that right?
You will find that in the wheel horn button pictured, the spring wire protruding can have two up to 2 functions, sometimes
- It is used to help hold the steering wheel horn button in place when it is not such a great fit and
- It can also be wired to act as a extra/main earth ground point as well, which can cause problems sometimes
The only way to fully check how it is wired is to pop the side lock tabs on the steering wheel horn button and peek inside to see how it is set up or use multi meter, if you don't have test meters then try below method.
I don't have a CE wiring diagram so it depends on if the horn runs thru earth switch relay or how it is switched? You said the two wires coming from boss kit when connected together, or plugged in SAAS button will sound horn, correct?
Just use your steering wheel lock down nut as a test point ( make sure its tight) and just connect one of the wires at a time to the the center nut and see which, if any sounds the horn, when you find that wire connect it to center terminal of your horn button, dont insert it into wheel yet (This is where coloured alligator test clips/ multi-meters come in handy) if you have the clips connect one to spring clip wire and then run another from same spring clip wire to the steering nut, test button again, if nothing happens unclip test clip from spring wire, connect test lead to other terminal i'm sure its just a matter of finding trigger wire and connecting one or both wires to correct terminal.
Depends on how the horn is set up, most neg some are pos switching relay, i remember way back about 30 years ago i think i removed the same spring clip from a horn button in order to get the horn to work back then, its too far back cant remember details or why i did though??, then i just did the above silicon/masking tape trick and all was good again.
Some of the cheaper caps require lots more pressure while pushing button to get them to work as well, just to make life more interesting