thanks Bob. now how about in english?Hood grounding, good plug wires, radio DC filter choke. Do all these and check back with any further problems (which I doubt you will have).
and there is one of the many reasons i ask all these silly questions! for thirty two years i have looked at that copper clip and wondered what the hell it does! just looked and it is still there, although it does not appear my hood is in contact with the clip when it's closed. guess i can just bend the clip up a bit. thanks Bob!Billy,
On the 69/70's, there is a copper plated spring clip with teeth that mounts at the top if the cowl, it grounds the hood when the hood is closed, not sure if 67/68's have them or not (and can't recall what year you own, put it in your sig maybe?).
I don't think this is correct. The voltage/current that the alternator puts out is rectified AC and the frequency of the AC (and thus the noise) varies in frequency. Also, there is minimal filtering provided by the battery and no large capacitance or inductance to form a proper filter for that noise. As a result, the AC noise riding on the DC presented to the radio can end up causing noise in the audio output. Noise which a proper DC choke will eliminate by filtering it (not permitting it to pass the choke). Grounding is of course important (ground loops and differences in ground potential can cause plenty of problems), but it will not do anything to remove noise produced by the alternator....Alternator whine is a grounding problem...
It it best to have clean metal to metal contact. I always use no-ox grease to keep it from corroding/rusting as well. Grounds are crucial to everything - make them clean/secureIn reference to grounds, On my car once it comes back, when I go to establish a ground should I go to bare metal or will the screw through the paint be sufficient? I sure don't want to be scraping off fresh paint everywhere. There were a ton of grounds on that car.