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1979-2004 Mustang Parts
Used/Take Off Mustang Parts
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Download the new 2007 Brothers Performance Warehouse Mustang Parts catalog (in PDF format).
2012 Railroad St.
Corona, CA 92880
Directions and Map
Showroom Hours:
Open M-F 7am-6pm PSTOpen Sat. 9am-4pm PST
Se Habla Español!
130A 3G Alternator Upgrade: Swapping a 94/95 5.0 GT 130A 3G Alternator in to a 86-93 5.0 GT/Cobra
The benifits of installing a more powerful altrnator are numerous, higher output,more current in return giving you less drain on your battery.A new alterntor is almost a crucial addition once you enter the realm of a high output stereo systems,electrical fans and aftermarket ignition systems.
To complete the installation you'll need the following tools:
- 130A 3G alternator. Brothers part #F4PZ10346BRM
- 2" Grade 8 3/8 coarse thread bolts . (hardware store)
- Grade 8 nut for above bolt
- 2 washers for nut and bolt
- 10" lenght of 10 or 8 guage stranded-core electrical wire.
- Ford 3G alternator stator wire connector (Dealer item)
Prepping the car
- Disconnect the battery and remove the Serpentine belt
- Unplug the factory alternator connectors from the alternator.
- Unbolt and remove the factory alternator (2 bolts)
- Peel back/unravel plastic covering on factory alternator wiring harness
- Test fit the 3G alternator, slide in the bottom mounting ear and rotate into position.
- Mark the factory alternator bracket needing clearance.
- Clearance the alternator bracket by cutting/griding away the marked area with a die cutter or dremel.
- Secure the alternator using original bottom bolt and new 2" top nut,bolt and washers.
- Locate the point where the pair of MAIN wires ( black/orange) join and become one.
- Cut at intersection, leaving one main wire.
- Splice in a new piece of 10 guage wire,solder, and use heat shrink tubing to insulate.
- Test fit wire to alternator Main lug, trim if needed for proper fit.
- Crimp and solder on screw-terminal.
- Install screw lug on main screw terminal.Once tight,slightly bend screw lug away from alternator housing.
- Cut stator wire 2" from factory oval plug.This frees the factory 3-prong spade connector which can be discared.
- Splice in new stator connector,solder,use heat shrink to insulate.
- Reconnect battery and immediately check voltage across terminal. Should read 12v.
- Connect voltmeter across battery terminals.
- With key off,voltage should read 12-12.6
- Turn off all accessories and turn key on. Battery light on dash should come on.And voltage should drop to between 11and 12v. If voltage drops below 10v recheck connections.
- Start car.Voltage should jump to above 13 volts.
- Bring engine to 2,000 rpm with all accessories off, voltage should be above 14 v
- With all accessories on voltage should read above 12.5v
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Watch for new tech notes and tips, as we continually update and add information to this section.
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