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Digital capcitor connection

What is the best technique to hook-up a capacitor to achieve its fullest ferformance? can i conect the positive and negative supply terminals of the amplifier directly to the negative and positive terminal of the capcitor togetnher with the negative and positive of the battery supply? i have a separate battery for my audio system with the help of a battery isolator so that the main battery for the engine is not going to be discharge whenever the audio system is operating.pls give me the best technique to hook-up a capacitor......... thank you so much...............

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Wire the cap directly to the battery with an in line 50 or 60 amp fuse. run a 2nd set of wires to the amp. + is + & - is -. you can either use a fuse or a circuit breaker. i just used the rockford fosgate double amp set up with the in line fuse.

Posted on Sep 24, 2008


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Connect ground wire to ground. Connect positive wire to the same positive wire as the amp is. If you lost the charging resistor then connect the wire to the cap first then connect to the power source. This will keep it from sparking and damaging the plating on the connector.

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I have had this problem with quite a few chargers there is a capacitor inside the charger hooked with the positive wires.

chances are that you need to replace the capacitor or just buy a new charger.

capacitors are cheap but you will need also a soldering iron and solder.
videos will help on techniques.

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Hook your two brown wires to the new capacitor. Now your black and white wires go to the contactor. Disconnect the wires that go to the fan off the old capacitor. The old capacitor is a dual for the compressor and the fan you still have to leave the wires on the old capacitor for the compressor but the new capacitor is independant now. let me know if this helps.

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I have a Ruud condenser on which I just replaced the capacitor and contactor. When I power up, the fan motor spins very slowly and a buzzing occurs about every 15 seconds. The buzzing sounds like it's...

Hello Zing77,

I understand that you are having a problem with your Rudd condensor. The fan is turning slowly and the compressor is making a buzzing noise which has a Diversitech hard start conected to the capcitor.

You have already replaced the run capcitory on the unit and have attached the compressor wire to therm and c and the fan to therm and fan. The hard start kit shoudl be attached to the therm and c with your compressor wires attached to the same place. The hard start kit is to give the compressor the extra push (electrical charge) to start.

You need to check your connections and make sure that you purchased the proper run capcitor. If you have purchased the proper compacitor and the connections are right then you have a bad fan and the compressor as gone out on the unit.

Thank you for choosing


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1 Answer

My rooftop AC RV air conditioner will not start.

You can take a digital meter and put a lead on each
side of capacitor, the meter reading will go up and
then back down, Reverse the leads and it should do
the same thing.

If this is a dual capcitor that controls the fan and
compressor and only the fan comes on, more than
likely it is not the capacitor. However its easier to
replace the capcitor and prey to god that it works.

If it doesn`t then you know you have other issues for
sure, however the capacitor is a pretty cheap part.

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1 Answer

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Your diagram should be stuck to the back of the cover. I have a digram but It'll take me a while to find it, I'll try to dig it out tomorrow .I think the wire ends should give you some idea as to the location look for kinks and marks as to there past place. .

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a capacitor is typically inline with your power source and stores a large amount of power to supply bursts of power when heavy draws occur. it sits between the source and the motor so you should have the (source - capcitor - motor) hot wires all conecting at the same place. The other wire on the capacitor should be the ground (if they have +/- markings use the negative as the ground).

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Hook up the battery, (the negative post) and then put the fuse in. This is the best choice because if you put in the fuse and then put the negative post back in and the wires slip when putting in the negative post, the fuse might blow due to the sparks. You will then need to get another fuse, which also mean sending more money.

Dec 04, 2007 | Scosche Industries EFX Amplifier Wiring...

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