Easy tips

Where does the red wire on the alternator go?

Where does the red wire on the alternator go?

Locate the terminal on the alternator labeled “B”, “Bat” or “Pos.” All alternators have this terminal. The wire that connects to it is red and goes to the battery. It is a heavy duty wire as it has to carry high current.

Why does a wire get hot when shorted across a battery?

If there’s no air gap, a short circuit means the load is being bypassed, and extremely high current starts to flow through the wire, and since wires have some intrinsic resistance, they heat up until they are hot enough to burn into two pieces and break the circuit.

What causes an alternator to get really hot?

High voltage, bad diode, improper alt fan, bad bearing , defective heat sink ,high voltage drop accross alt power wire or ground wire . A few places to check alternator fan, now why didn’t I think of that?

What kind of wire do you need for an alternator?

Build and install a bridge wire, 14 gauge, one ring terminal on one end, one .250 wide flat female blade terminal on the other, from that large BATT term on the new 12SI alternator, to the number 2 terminal on the rear of the new alternator. If you have either a volt meter, or ammeter, you are done, finished, works like stock.

What’s the best way to charge an alternator?

If you have a charge light, then, use a wire length to connect the number 4 wire from the old remote mounted regulator connector, to the number 1 terminal on the alternator, the light will work as stock, done, finished. DIRT SIMPLE, I’VE BEEN DOING IT THIS WAY FOR OVER 25 YEARS, NO PROBLEMS.

How do you mount an alternator on a Batt terminal?

Mount 12SI internally regulated alternator in place, install the large gauge battery to alternator cable, removed from the old alternator, onto the new alternator BATT terminal.

High voltage, bad diode, improper alt fan, bad bearing , defective heat sink ,high voltage drop accross alt power wire or ground wire . A few places to check alternator fan, now why didn’t I think of that?

Build and install a bridge wire, 14 gauge, one ring terminal on one end, one .250 wide flat female blade terminal on the other, from that large BATT term on the new 12SI alternator, to the number 2 terminal on the rear of the new alternator. If you have either a volt meter, or ammeter, you are done, finished, works like stock.

Mount 12SI internally regulated alternator in place, install the large gauge battery to alternator cable, removed from the old alternator, onto the new alternator BATT terminal.

If you have a charge light, then, use a wire length to connect the number 4 wire from the old remote mounted regulator connector, to the number 1 terminal on the alternator, the light will work as stock, done, finished. DIRT SIMPLE, I’VE BEEN DOING IT THIS WAY FOR OVER 25 YEARS, NO PROBLEMS.

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Ruth Doyle