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Discussion Starter #1
Hey, I'm having a little trouble with my stereo. When the engine is off (acc on), my stereo sounds great, I can crank it up and have perfect bass and all. When the engine is running though, I can't turn it up too loud b/c it crackles and stuff, I guess from engine interference. What can I do about this? I have the power lead hooked up to a post on connected to the fuse box. Is this ok? Is this what's causing the noise? Any help is appreciated. BTW, I have a JVC El Kameleon (LX30), Infinity kappa 6 1/2's, and Infinity kappa 6x9's. Thanks for the help!
 
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i could be, and probably am wrong, but if you have electronic ignition could that somehow cause interference in the radio? keep in mind this is just a guess
 

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As the previous poster mentioned, an aftermarket electronic ignition can contribute to this problem. I have heard of using sheilded power cable to overcome this. Can also be caused by poor grounding of stereo equipment or antenna.

68 GT500
68 1/2 CJ Coupe

MCA# 18519
 
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I have also been told that if you have high performance spark plug wires they can cause stereo interference.

David
 

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Discussion Starter #5
I don't have an electronic ignition... yet. I just haven't installed it yet. What can I do to overcome this? I think it's grounded pretty good.
 

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Thanks guys! But I really wish you would stop suggesting spark plugs!! =) It's a tough job to change spark plugs w/ an FE in a 67-68! I was hoping it would be a 5 minute fix.
 

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In my car the cracking followed the revs and was traced to the alternator. It turned out that most of the grounds on the engine and Alt were bad. I replaced all ground straps and hope the cracking will be gone.

Furthermore the best thing you can do is pull power and ground directly from the battery, with a sufficiently fused line. If you then Isolate the radio from the car body, you will not get any interference from the car as it is completely separated from oneanother.

When I reinstall all my stuf in the car, I will take this approach. One ground to the back one positive to the back, gold plated splitter blocks in the line in the front and rear to connect it all to and insulation tape around the head unit so it doesn't contact the car body.

It's a bit more work, but should be worth it in quality terms. It also mkes trouble shooting the rest of the cars electricals easier, as you can delete all audio stuff by simply pulling the main fuse.

Until now, my radio was wired to the original wiring in the car by use of scotchlocks and stuff. This lead to car troubles, that eventually were traced to the radio setup. In the future this will be a one second check instead of hours.....

Just my view...

Columbo
http://members.brabant.chello.nl/a.schroeders/Columbo66.jpg http://members.brabant.chello.nl/a.schroeders/Columbo66_2.jpg
First time rolling restoration, 66 289 nearing completion.
 

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resistor plugs vs non resistor can be the culprit

66 Coupe, Sauterne Gold (aka goose sh** green) rust bucket
order parts...wait....parts arrive....wait....look at parts...wait....scratch crotch...wait....look at rust bucket...sigh...scratch again
 
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make sure your plug wires are in good condition and have shielding for radio noise. Some performance spiral woud wires were made for racing specificaly and don't have any shielding for radio noise. If the plug wires are from a local parts store chances are you'r covered but you just might want to check to be sure. Otherwise check your amp, and alternator wiring. Your ground wire must be tightly secured to preferably bare metal. My Petronix electrinic ignition hasn't made any radio noise through my pioneer deck or my punch amp.

70 fastback modified 351W Edelbrock water pump and rpm intake holly 650 front disc brake conv. Auto to toploader conv. Hurst comp. plus shifter
 
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