Looking at my 74 (single horn) and it shows the letter "A" which I believe signifies the tone of the horn. If a 74 is equipped with option U05 what is the note of the 2nd horn? Looking at possibly adding the 2nd horn to my car. I have a old wiring harness from a 74 that had the 2nd horn option and the "pigtail" would be an easy addition to make. Thanks.
Marty
Marty
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