I have something I need to tie into the cars horn. I have a wire I need to splice into the horn. Single wire. Question is where along the line? Should I splice the horn circuit at the steering wheel or the horn. Our cars have 2 horns a high & low. Should I split the single wire into 2 wires & then splice into both horns?

What I need is to activate the device when I press the horn pad.

 

Don't know about Acura but on a lot of cars the horn is aways "hot" and the button completes the ground circuit. You should be able to tell with a volt meter.

 

Yeah I know the wiring & which wires to use, but the CLS has 2 horns. Other cars I had only had 1, & the instructions only reference a 1 horn system. So I'm a bit confused as to what side I should splice into.

 

you can tap in at the horn. if you dont want the other horn to sound just disconnect it. and the wiring at the horn isnt "hot" it powers up from the horn relay when you ground the relay at the steering wheel switch. then the horn is grounded at its mounting plate.

 

I have an aftermarket steering wheel and hub on my car 2006 tl i want to wire the horn up but unsure what wire is the horn wire color i dont want to cut and splice the wrong wire if someone knows witch color it is that would be appreciated

 

You need to post your question in the forum specific to the generation of your car; 3rd generation TL.
This is the 2G CL forum.
Or you can download one of the PDF service manuals, on the thread below, and look-up the information you seek.
2006 TL Searchable PDF Service Manual - AcuraZine - Acura Enthusiast Community