Seems unnecessarily complicated. The horn signal passes through a relay for each of the stock horns. Each Hella horn has two terminals. I don't think the polarity matters. Ground one terminal and connect the other terminal to the stock horn wire. Does this not work?
__________________
2017 370Z Nismo Tech 6MT PART OUT IN PROGRESS
Work | Motordyne | Powertrix | Swift | Michelin | Takeda | Hotchkis | RJM | Voodoo13 | SPL | SPC | Z1 Motorsports | ZSpeed | Morimoto | Craft Square
Last edited by k67p67; 08-13-2024 at 04:16 PM.
|