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  1. Radio not always powering on with ignition. Ground issue?

    Technical & Advanced Car Audio Discussion
    I recently just replaced the radio in an excavator and I am having weird issues. Sometimes the radio will turn on with the ignition, other times it won't. Then to fix it I have to plug in the radio with the ignition off and then turn the ignition on to get it to work again. But turning the...
  2. How do I test a 1962 Blaupunkt without installing it in a car?

    General Car Audio Discussion
    Hello - I just bought a Blaupunkt Autoradio Frankfurt TR De Luxe 32 741 at an auction for $2.00. I gather this is good. I want to find out if it works without installing it in a car. Can I hook up a 12V battery charger to it as a power source? There are only three wires visible on this unit...