i installed msd 6a box on my 84 z28 now radio is crackling how do i stop the crackling

 

I have a friend with the same problem in his (ahem) '67 Mustang. He has the MSD 6AL box, and everytime you touch the gas, the radio crackles. He is about to try the MSD noise filter which is sold in both Jeg's and Summit. Part No. 8330 I would recommend you take a look at it. I'll keep you informed whether is works or not.

 

Put sheet metal between the box and the radio, or the box and the antena. What is happening is the emag field from the box is interfering with the radio. Putting a metal shield around it is equivilant to using a heat sheild. The more layers you use the better the insulation. You have to use metal or else it won't work. This should be a lot less expensive than a kit someone sells. I hope this helps.

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'89 Red Formula 350- 350 .060 over forged pistons 232* @ .020 cam Performer RPM Holley 750 DP Vortec 1.94 1.50 Hedman shorty headers Dual Exhaust w/ cutouts 1LE WS6 suspension, wheels, and brakes, 9 Bolt 3.27 Posi Edelbrock LCA's & Track bar subframe connectors 700R4 Harwood snorkel scoop Eclipse Head Unit Delco Bose Speakers 2 12" Pioneer subs w/ 400 watt/chanel amp

 

Get the MSD noise eliminator, takes complete care of the problem. I installed one with a MSD 6A box and never had a problem with noise and I have a high performance stereo system in the car.