If you have an amp meter you don't need a light also. The light acts as a resistor and excites the alternator. If it's not the right resistance bulb it will not excite the alternator. A bulb of too little resistance will excite the alternator but will allow the current back to your ignition switch and continue to feed the ignition system after your key is turned off and the engine will continue to run. What we use to do 30 years ago on equipment with amp meters when converting the charging systems from generators to alternators we just put a diode in the place of an idiot lite. This allowed current in to excite the alternator but no back feed to the ignition switch. It worked excellent. The diode can be put any where in that wire. We put them up under the dash where they couldn't be seen. I hope this all makes sense!
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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