| E10 Base Bulbs |
| BULB VOLTAGE AMPS WATTS |
| #14 2.47V .30A .741W Standard for Jensen #15 |
| #131 1.30V .10A .130W Low HP motor & Jensen #15 |
| #502 5.10V .15A .765W Stepper-motor Generator |
| #359 1.35V .06A .081W Low HP motor & Jensen #15 |
| #222 2.25V .25A .563W Focused-beam for Jensen #15 |
| #352x 3.00V .07A .210W Standard for Jensen #15E |
Obviously, the faster you spin a generator the higher the voltage. Most engines have a sweet spot of throttle position and belt shiv setting.