Alternator question, battery is discharging quickly.

FerociousP · 03-10-2017, 03:53 PM

Hey Zach, quick note.

For the sense wire, you could technically run a wire from the B+ on the alternator to the pin, but the voltage at that pin is used as reference for regulating... If say, your battery is in the back, the voltage read at the battery will be less that at the B+ "output" of the alternator... This could make the alternator regulate the voltage .1 or .2 lower than it normally would in stock config, or what you would prefer.

so, its good practice to have that sense wire be at least a little bit down the line from the alternator... If stock its hooked up at the fuse box, its probably best to hook it up there.

03-10-2017, 03:53 PM	#27
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro Posts: 1,046 Rep Power: 19	Hey Zach, quick note. For the sense wire, you could technically run a wire from the B+ on the alternator to the pin, but the voltage at that pin is used as reference for regulating... If say, your battery is in the back, the voltage read at the battery will be less that at the B+ "output" of the alternator... This could make the alternator regulate the voltage .1 or .2 lower than it normally would in stock config, or what you would prefer. so, its good practice to have that sense wire be at least a little bit down the line from the alternator... If stock its hooked up at the fuse box, its probably best to hook it up there. __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

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