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Alternater there are 2 wires leading from battery plugged into alternater and a third wire is leading from alternater to nothing with an end cap. what is this wire for and can i remove it?

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This should be your exciter wire it should be wired to your battery warning klight on the dash

Posted on May 31, 2008

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I got power to coil nothing comes out of coil


if you have power to the coil the only things that can be wrong are: -
1. the coil is duff.
2. The HT lead is broken.
3. the plug cap is duff, broken.

Remove plug cap and see if there is a spark from the wire core when the lead is placed near the engine/frame.

If it sparks OK replace the plug cap,. no spark means either the coil or the lead are duff. If you can replace the lead try testing again without the cap. Hope this helps.

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Overchanging alternater (ECU?)


The ECU has no control on the voltage. Does your vehicle have a separate voltage regulator? If so that's your fault. A lot of alternators have the regulator built into them. The alternator needs to be put on a test rig away from the vehicle and the output tested, this will eliminate the vehicle, You could disconnect the wiring to the alternator, run three fly leads to the alternator and to a separate battery and run the engine and test the voltage on the spare battery. Wire 1: Battery neg to case of alternator Wire 2: Battery pos to + terminal on alt (the thick wire) Wire 3: Battery pos through a 5 watt bulb to the ind terminal (ignition light) 17 volt will blow another battery for sure.

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Am in thailand - no second hand or original spark plug leads available - can i make them up? what type of lead should i buy - 1986 corolla sedan


Spark plug wires from any car will work if they are long enough. Just make sure the end that goes on the distributor cap will fit your cap.

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Replaced Oreck power switch. 2 black leads and 1 white lead for switch. Posts marked 1, 2, and 3. 2 black wires to switch powers on. Connect white wire and breaker trips. Where does the white wire go?


Both black go to the switch. Power in - black to switch / white to white from motor.
From motor - black to switch / white to white from power cord
The black wire from the power hooks to the off end of the switch and the black wire from the motor hooks to the on end. Third post is not used. The two white wires are connected to each other with a small twist on wire nut.

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Istalled another alternater yet my battery is still going flat.


change or charge the battery and make sure you install the correct alternator capable of supplying the correct amps your car needs otherwise it wont charge correctly/ check your electrical wiring it must be grounded somewhere or the connection is incorrect thats why ur battery drains...

Apr 06, 2010 | 1995 Toyota Pickup

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I have no spark at plugs coil has good spark


If you have spark at the coil then you have a good coil. You can't measure Ohm at a spark plug since it is alway open at the gap. But you can OHM measure a spark plug wire at both end. If you have nothing mean your wire is bad. You can swap one more wire to confirm a bad wire. If your wire is not bad then I recommend to replace both rotor and distributor cap. Good luck in locating the problem.

Dec 28, 2009 | 1983 Honda Accord

3 Answers

93 jeep cherokee , iv got spark at the coil but not at the plug just replced cap, roter, wires, but still notheing got any ides ?


Coil may be producing low voltage (KVs) to where it makes enough energy to snap out of the coil tower but then supressed as it travels down the high tension leads finally to the plug. Incidentally spark plug leads should have about 10k ohms of resistance per foot.I good coil will jump spark at least a half inch if you pull the wire off the cap and produce this much air gap

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