Mine are both in as of this AM...I just used the stock brackets, and put an S-bend in them to move them closer to the rad, but not too close. The sound is good with two, but kinda wiah I had two-tones....it sounds kinda funny with just one tone. I'll get used to it though. I already got to use it when some tool on his cell was straddling the double yellow on a country road. Had to wake him up.
Forgive the camera phone photos...
Engine compartment with two separate 12 ga leads and 20A fuses going to the positive terminal
Front shot of horns.