Grounding points must be clean and secure, especially in systems where metal frames serve as return paths. 6V to 12V Wiring Schematic Start by replacing the original generator with a 12V alternator rated at least 60 amps. Ensure it's a negative ground unit with an internal regulator for simplified wiring.. Connect jumper wire from the positive side of the battery to the red ignitor wire just removed from the coil. If the engine starts, then you have a low voltage problem .
![[DIAGRAM] Wiring Diagram For 6 Volt Generator](https://f01.justanswer.com/ref/http_farmall140.com/wp-content/uploads/2012/10/Farmall-12-Volt-Alternator-Conversion1.jpg "[DIAGRAM] Wiring Diagram For 6 Volt Generator")
![[DIAGRAM] Basic Auto Wiring Diagram 6 Volt Generator](https://i5.walmartimages.com/asr/d88edad7-892c-4145-9d6d-d81a4dccffb0_1.81df82a353ff69d3b50da53ac906e35c.jpeg "[DIAGRAM] Basic Auto Wiring Diagram 6 Volt Generator")
Changing Your Electrical System From Positive Ground To Negative Ground Is NOT Difficult This is a quick lesson on changing the polarity of your 6-volt antique vehicle's electrical system from positive ground to negative ground. There is enough misinformation floating around on this subject to write a dozen books.. Possible reasons could include a faulty ground connection from the alternator to the negative battery post, or perhaps the output side of the alternator isn't securely connected to 12 volts, depending on your vehicle's wiring.