Question about 1985 Chevrolet Sportvan G10

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Alternator wiring? i have a 70s chevy just pick up and just installed creat motor with FI and the alternator wire harness has 4 wires my old one had 2 what to do. its a ac deco simular to whats in a mid 90s chevy.

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  • thayne_078 May 11, 2010

    Whats this harness from you should need only 2 wires one keyed power and one sense

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  • 65 Answers

You should only need the main charge wire and a trip wire to start it charging, cap the others.

Posted on Mar 24, 2009

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Put power mirrors 0n 1967 chevy c/10 problem with wiring


Get yourself a test light and figure out what harness wire does what when the switch is activated. Then figure out what wires control which movement to the mirror and match them up.

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How do you do it--alterenator replace 2006 dodge van


Hi there, you did not specify the type of engine you use so here are possible guides for varying enginge types:

2.4L Engine
To Remove:

1. Disconnect the negative battery cable.
2. Disconnect the intake air temperature sensor and remove the air cleaner assembly.
3. Remove the EVAP purge solenoid and move it out of the way.
4. Disconnect the wiring from the alternator.
5. Remove the accessory drive belt from the alternator.
6. Remove the alternator.

To Install:

1. Install the alternator.
2. Install the accessory drive belt
3. Connect the wiring to the alternator.
4. Install the EVAP purge solenoid in the bracket.
5. Install the air cleaner and duct, then connect the intake air temperature sensor.
6. Connect the negative battery cable.

3.3L & 3.8L Engines
To Remove:

1. Disconnect the negative battery cable.
2. Disconnect the wiring from the alternator.
3. Raise and safely support the vehicle.
4. Remove the right front tire and lower splash shield.
5. Remove accessory drive belt.
6. Remove the lower engine oil dipstick tube bolt, then remove the wiring harness from the dipstick tube.
7. Remove the 3 mounting bolts.
8. Lower the vehicle.
9. Remove engine oil dipstick tube.
10. Roll and carefully remove the alternator from vehicle.

To Install:

1. Place the alternator into position on the engine.
2. Install upper mounting bolts to hold the alternator in place.
3. Lubricate the o-ring with engine oil and install the dipstick tube.
4. Install the upper dipstick tube bolt.
5. Connect the wiring to the alternator.
6. Raise and safely support the vehicle.
7. Install the alternator lower mounting bolt and tighten.
8. Install the lower oil dip stick tube bolt.
9. Install the accessory drive belt.
10. Install the right front splash shield and tire.
11. Lower vehicle.
12. Install the wiring harness at the dipstick tube
13. Connect the negative battery cable.

Hope these help.

Jan 28, 2011 | 2006 Dodge Grand Caravan

1 Answer

Installing 85 Iroc 305 into 57 Chevy; need wiring diagram to create EFI harness from car harness


Check out faxonautoliterature.com. They have an assortment of literature that should be able to get you up and running. There are original GM dealer service manuals for both vehicles which would have complete wiring diagrams. They list a separate wiring diagram book for the Camero. They have 2 different books on swapping newer GM engines into older GM vehicles. I've used them before and had excellent service. Hope this helps.

Sep 06, 2010 | 1985 Chevrolet Camaro

1 Answer

1990 Chevy 1/2 ton 4/4 truck with auto and 350v8. wiper problems


to whom it may concern, you cant used the harness of 1989 model to 1990 model chevy truck, even the sockets are the same a,b,c,d, thers a big different on wire distribution from the ecu. it better that you find harness on the same model, or if you still not yet finish that problem i will gave you the 1990 ecu diagram on live chat or contact me @ my ym

Jul 11, 2010 | 1990 Chevrolet C1500

1 Answer

How to install 03 ford focus alternator?


Removing the Alternator
Disconnect battery ground cable
Remove the ground wire (black) from the alternator
Disconnect the positive wire (red wire held on by a retaining nut) from the back of the alternator
Now disconnect the wire harness from the alternator
Remove the drive belt
NOTE: Some models use a belt tensioner that applies tension to the drive belt.
The best tool to use for this job is the serpentine belt too.
If you can borrow one from a neighbour you can get one at PartSource. (Part# 648451)
On other models you will have to loosen the adjusting bolt on the alternator bracket.
If you're not sure about how to remove the drive belt, visit your local PartSource for free print outs of vehicle specific instructions.
Take off the mounting bolts from the alternator bracket
Now remove the alternator from the engine compartment There. You've removed the alternator. How easy was that?
Installing Your New Alternator
Put the alternator in the engine compartment
Install the mounting bolts that connect the alternator to the alternator bracket
Connect the alternator wiring harness
Now connect the positive wire to the alternator
NOTE: Your new alternator should come with a retaining nut.
Remember to remove the nut before you install the positive wire.
If it doesn't keep the old nut.
Connect the ground wire to the alternator
Now install the drive belt
This is a great time to replace your old worn out belt. When inspecting your old belt look for signs of cracking, oil soaked, hard glazed, splitting or fraying.
All these signs mean it's time you replaced your drive belt.
If your vehicle no longer has the belt routing diagram under the hood, visit your local PartSource for a free print out of the belt routing diagram.
Reconnect the ground battery cable .

Nov 19, 2009 | 2003 Ford Focus

1 Answer

Wire colors dont match when swapping chevy cavalier motor.


For on thing you cannot go from a 4 cyl to a 6 cyl engine,can only reinstall what was originally there,other wise wiring harness come into play here.

Apr 07, 2009 | 1994 Chevrolet Cavalier

2 Answers

Blower fan only works on high speed


Its the blower resistor. I couldn't get the pictures in sorry. Rob

RESISTOR-BLOWER MOTOR
DESCRIPTION
The blower motor resistor is mounted to the HVAC air
inlet housing, directly behind the glove box. The
blower motor resistor consists of a molded plastic
mounting plate (1) with an integral wire connector
receptacle (2). Concealed behind the mounting plate
are coiled resistor wires contained within a ceramic
heat sink (3). The blower motor resistor is accessed
for service by removing the glove box from the instrument
panel.
The blower motor resistor is accessed for service by
removing the glove box from the instrument panel.
OPERATION
The blower motor resistor is connected to the vehicle electrical system through a dedicated wire lead and connector
of the HVAC wire harness. The blower motor resistor has multiple resistor wires, each of which will reduce the
current flow through the blower motor to change the blower motor speed.
The blower motor control in the MTC heating-A/C system directs the ground path for the blower motor through the
correct resistor wire to obtain the selected speed. With the blower motor control in the lowest speed position, the
ground path for the blower motor is applied through all of the resistor wires. Each higher speed selected with the
blower motor control applies the blower motor ground path through fewer of the resistor wires, increasing the blower
motor speed.
The blower motor resistor cannot be adjusted or repaired and, if faulty or damaged (such as a cracked ceramic heat
sink), it must be replaced.

DIAGNOSIS AND TESTING
BLOWER MOTOR RESISTOR
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in accidental airbag deployment and possible personal injury or
death.
NOTE: For circuit descriptions and diagrams, refer to the appropriate wiring information. The wiring information
includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness
routing and retention, as well as pin-out and location views for the various wire harness connectors,
splices and grounds.
1. Disconnect and isolate the negative battery cable.
2. Disconnect the wire harness connector from the blower motor resistor (Refer to 24 - HEATING & AIR CONDITIONING/
CONTROLS/RESISTOR-BLOWER MOTOR - REMOVAL).
24 - 138 CONTROLS ND
3. Using an ohmmeter, check for continuity between all of the blower motor resistor terminals. In each case there
should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower
motor resistor or blower motor as required. If not OK, replace the faulty blower motor resistor.
REMOVAL
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in accidental airbag deployment and possible personal injury or
death.
WARNING: The blower motor resistor may get very hot during normal operation. If the blower motor was
turned on prior to servicing the blower motor resistor, wait five minutes to allow the resistor to cool before
performing diagnosis or service. Failure to take this precaution can result in personal injury or death.
1. Disconnect and isolate the negative battery cable.
2. Remove the glove box (Refer to 23 - BODY/INSTRUMENT
PANEL/GLOVE BOX - REMOVAL).
3. Disengage the wire harness connector locking tab
and disconnect the wire harness connector (1) from
the blower motor resistor (2).
4. Remove the two screws (3) that secure the blower
motor resistor to the HVAC housing (4).
5. Remove the blower motor resistor from the HVAC
housing.
INSTALLATION
1. Position the blower motor resistor (2) into the
HVAC housing (4).
2. Install the two screws (3) that secure the blower
motor resistor to the HVAC housing. Tighten the
screws to 2 N·m (17 in. lbs.).
3. Connect the wire harness connector (1) to the
blower motor resistor and engage the wire harness
connector locking tab.
4. Install the glove box (Refer to 23 - BODY/INSTRUMENT
PANEL/GLOVE BOX - INSTALLATION).
5. Reconnect the negative battery cable.


Aug 22, 2008 | 2002 Dodge Dakota Club Cab

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