JD 5103 ELECTRICAL DRAIN

[hayyou]

I HAVE A JD 5103 TRACTOR WHICH HAS A SLOW DRAIN ON THE BATTERY. WHEN I HOOKED UP A TEST LIGHT BETWEEN THE GROUND CABLE AND NEG. POST I GOT A WEAK PULSING GLOW ON THE TEST LIGHT, ABOUT THE FREQUENCY OF A CLOCK TICKING. ANY IDEAS?

 

[Zebrafive]

Start taking out fuses until the light goes out. This will tell you what circuit is drawing power.

The pulsing makes me think hour meter. Unless it's mechanical. If it's electrical, try unpluging it.

 

[Tx Jim]

Alternators have a history of draining battery if something in it fails.