Where is the amp getting its power from?
Is it from the battery or from power under the dash?
The amp should be getting power directly from the battery.
The cable under the dash cannot flow enough current for the amp and the ignition.

And with any upgrade or addition in electrical components, the current output of the original alternator will be at its maximum and it is best to replace the alternator with a higher amperage unit.

New bigger Alternator, Extra Battery.

An Odyssey battery are good for smoothing over the current draw of a big sound system.

Running big enough wires to the amp will also help a little.

Hi All

I've just put an amp and speakers in my 1200 Ute and I've noticed that when the amp is on my car occasionally 'misses' - if I turn the amp off it's fine.

Now I'm assuming that the amp is drawing too much current and that the spark is no good in the plugs - is this right?

How do I fix it? - new coil? new dizzy? new alternator? all of the above?

Thanx


Vaztr