Ready to install the 2 horns that came in a box when I purchased the car. Do the purple/yellow wires as well as the black(grnd) wires get connected to the different spades on the horns themselves? 74-tr6. Also, I replaced the steering wheel with a wood/leather one, adapter so on and so forth. This new wheel has (2) spades on the horn push part...one has a black wire attached which is just stripped and the adapter has a black wire with a push on spade connector. Any ideas?