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Have heavy red cable coming from inside vehicle into engine area, not connected to anything in engine area,looks like an earth cable but not sure what it should be connected to.

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Did you buy the car used? Chances are it's an aftermarket stereo cable, used for powering an amplifier. Look around in the hatch/trunk and see if you find the other end of it. If you do, that's what it was.

Posted on Aug 01, 2008

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Unable to turn engine no power to stater or power windows with sw. On or fan


What is year--make--model?
Usually the starter motor has two voltage circuits. One is battery voltage, hot all the time. The other circuit goes hot with key in the crank position and is usually wired through the neutral switch for automatic or clutch switch for manual tranny. Depending on your vehicle you may have starter relay? The starter motor usually grounds through engine block. Make sure battery has a full charge and battery connections are good. If you want to check voltage to and from ignition switch, I need more vehicle info to look up wiring diagram.
Any testing at the starter, make sure tranny is in park or neutral and functional parking brake is set. Safety is your responsibility when testing.

Apr 11, 2016 | Cars & Trucks

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Trouble-shooting your Isuzu starter..


Basic operation of a starter:
Your engine's starter motor is an electrical motor that is used to rotate the engine in order to get it to fire up. This motor draws a large amont of current from the battery (in the order of 70 Amps and up). In order to supply power to the starter a solenoid is used, it acts as a switch between the battery and the starter motor. This solenoid also engages the starter gear with the engine's flywheel and disengages it once the engine is started. Because the circuit for the solenoid also draws a heavy current a further relay is needed to control it.
The diagram below shows the electrical layout of the starting system.
  • i : Battery
  • ii : Starter relay(located in the relay box in the engine compartment)
  • iii : Starter solenoid
  • iv : Starter incorporating solenoid and motor.
  • v : Engine
  • vi : Battery earth cable
  • vii : Engine earth cable
  • viii : Ignition fuse
  • ix : Starter fuse
  • x : Solenoid to starter supply cable
  • xi : Ignition switch
  • xii : Starter motor
When the ignition(xi) is turned it supplies power from the battery through fuse (viii) to the starter relay(ii).
The starter relay activates and supplies power to the starter solenoid(iii) via fuse (ix)
The starter solenoid activates and connects power from the battery to the starter via a short cable(x) between the solenoid and starter motor. This allows the starter motor to turn.

General trouble shooting.
Turn the ignition off.
1/ First you need to check that the fuses are intact.
Keep the ignition off. Place the vehicle in Neutral. Chock the wheels and engage the parking brake.
2/ To prove the starter motor, connect power from the battery positive to the cable (x). This must be done with jumper cables. Touch the jumper cable to the connector on the back of the solenoid where cable (x) connects. Take care not to short circuit the jumper cable to the engine or vehicle body. It can be a tight fit and might not always be possible. If you hear the starter motor spin then it is working along with the engine earth cable. If not, connect the negative lead of the jumper cable between the battery and the starter motor body or any other bare piece of metal on the engine and put the positive lead on cable (x) again. If the starter motor does not spin it needs to come out for repair/replacement. If it spins check both the battery earth cable and engine earth cable and repair where nescasary.
3/ Once the starter motor has been proved move on to the solenoid. Remove the thin wire from the solenoid. Using a small piece of wire, connect battery positive to the connector where you just took off the wire. The solenoid should kick in and the starter motor will turn the engine. If the solenoid does not kick in, remove the starter for repair/replacement of the solenoid. If the solenoid kicks in then replace the starter relay.

If the starting circuit still does not operate the fault will be in the wiring. This needs reasonable expertise and if you dont have a voltmeter handy is not advised.
Bear in mind on automatic transmission vehicles there is an additional switch (Mode switch) wired in between the ignition switch and the starter relay. This switch is on the transmission itself and if faulty will not allow the starter to operate even if steps 1 to 3 were successfull. The same goes for the anti theft/immobiliser system.

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The following is specifically for Isuzu Trooper and Rodeo :
  • i : Battery
  • ii : Starter relay(located in the relay fuse box in the engine compartment designated X-17)
  • iii : Starter solenoid
  • iv : Starter incorporating solenoid and motor.
  • v : Engine
  • vi : Battery earth cable
  • vii : Engine earth cable
  • viii : 10A Starter fuse C-1(Fuse box: LH footwell on LHD vehicle, RH dash on RHD vehicle)
  • x : Solenoid to starter supply cable
  • xi : Ignition switch
  • xii : Starter motor
  • xiii : 80A Main fusible link FL-1(Relay fuse box)
  • xiv : 50 A Key SW fusible link FL-2(relay fuse box)
  • xv : Mode switch(A/T only - mounted on the side of the transmission) and for 6 cylinder manual transmission engines this is the clutch start switch mounted on the clutch pedal.
  • xvi : Anti theft system
  • B2 : B2 on ignition sitch
  • ST : ST on ignition switch
db79612.jpg


How to wire a relay

on Sep 17, 2010 | Isuzu Trooper Cars & Trucks

2 Answers

Why is my jumper cables sparking and over heating when trying to jump my car off


If it is sparking, then you are not connecting the cables correctly. Visually check that the cables are not damaged. Make sure both cars are not touching, put the red wire to the positive post of the battery and the black wire to the frame of the car. Connect the dead battery first. Wear gloves and goggles to be safe.

Mar 06, 2016 | Cars & Trucks

1 Answer

Where is the ground for the engine


The ground for the engine of your motor is to be found by following the earth connection from the battery it should be clamp to the car body, different manufactures earth their engines in all sort places, but one thing for sure is that if you look around the engine block and gear box their will be a heavy black cable coming of the inside car engine body work to either the engine or gear box, sometimes it's located on the starter motor,.i hope this of some help as I have not had any experience on this particular model, but I hope this basic information does help somewhat.

Good luck

Mar 15, 2015 | 2004 Chevrolet Aveo

3 Answers

Hi, I have a 2008 Pontiac G5 and I accidentally kept the lights on all day. Since I only have a positive (red) connection, I ground the negative connection to metal as well as the other car negative...


sounds like you are on the right track. Hook the jumper cables up to the dead car first. The red cable should go to the jumper terminal as you mentioned and a good place to hook up the black cable is the bolts on the strut tower.

then with the other car running hook up the red lead to the cars positive battery cable and then the negative to a good ground. Let the two cars sit for about 5 to ten minutes to give the dead battery a chance to charge.

Once the dead car is started let it idle with the lights turned off for at least 45 minute to an hour or drive it for the same amount of time with the light on (I assume you will be driving in the dark) or if its day time drive it for 30 to 40 minutes with the lights off. This should be enough time for the alternator to charge the dead battery.

Jun 24, 2011 | 2006 Pontiac G5

1 Answer

I am looking for wiring diagram for the starter motor for my rolls royce


hi, first thing we need to do is DISCONNECT the BATTERY (NEGATIVE (- sign)) HEAVY LEAD.

the SOLINOID has a HEAVY POSITIVE (+) LEAD this is a BOLT on connection and also (normamlly smaller cable (this cable feeds the car POSITIVE (+)) BOTH BOLT on THE SAME terminal ( ring terminals).

the STARTER MOTOR CONNECTS to the other BOLT ON CONNECTION (SINGLE ring terminal) of the SOLINOID.

the other small wire (s) is the (ignition key position starter motor circuit, the colour RED/WHITE or BLUE/WHITE. this is normally a PUSH-ON connector. if you have a BLACK or BROWN WIRE then this is EARTH (GROUND (-))

testing if this do'nt work. check if BOLT-ON CONNECTIONS are TIGHT by HAND.

the solinoid is a remote HEAVY CONTACT SWITCH and has 2 circuits SWITCHES HEAVY CURRENT up to 700 AMPS. and the CONTOL of the KEY to operate from a small wire. gerry

Sep 13, 2010 | Rolls Royce Silver Spirit Cars & Trucks

1 Answer

Need to find 12v "off with ignition off"


Does your cigar lighter stay live whe the ignition is off ?

Buy a cheap 12v tester with a pointed tip put the crocodile clip on a bare piece of the bodywork and test look at the wires coming away from the ignition switch, there will be a heavy cable in Red or Brown which is the supply from the battery
One of the other cables will carry the ingnition supply while the engine is running as there will only be around 10 wires it is no big deal to test that out as you just stick the point through the insualtion which closes up when you remove the probe

Once you have found the Ignition wire use a Scotchlock to break into the circuit to give you your live supply and put the ground lead to the earth post which will be near the steering column.

I am assuming that your radar scanner has an in-line fuse built into the wiring they supply if not invest in one

Jun 02, 2009 | 2008 GMC Yukon

1 Answer

Locate starter


Starter Motor Removal
  1. sta~us~en~file=ani_caut.gif~gen~ref.gif WARNING: WHEN SERVICING STARTER MOTOR (11002) OR PERFORMING ANY MAINTENANCE IN THE AREA OF THE STARTER MOTOR, NOTE THE HEAVY GAUGE INPUT LEAD CONNECTED TO THE STARTER SOLENOID (11390) IS HOT AT ALL TIMES. MAKE SURE THE PROTECTIVE CAP IS INSTALLED OVER THE TERMINAL AND IS REPLACED AFTER SERVICE.
    Disconnect the battery ground cable (14301). Refer to Section 14-01 .
  1. Raise the vehicle on a hoist. Refer to Section 00-02 .
  1. Disconnect starter cables from starter solenoid.
  1. Remove upper and middle bolt.
  1. Remove lower bolt and starter motor.
Installation
  1. Position starter motor to engine and install middle and lower bolts finger-tight.
  1. Tighten the upper bolt to 20-27 Nm (15-20 lb-ft).
  1. Tighten the lower and middle bolts to 20-27 Nm (15-20 lb-ft).
  1. Connect starter solenoid connector. Be careful to push straight on and make sure connector locks in position with a notable click or detent.
  1. Install S terminal cable eyelet with washer and nut. Tighten to 4.5-6.5 Nm (40-57 lb-in).
  1. Install starter cable nut to starter solenoid B-terminal. Tighten to 9-14 Nm (80-124 lb-in).
  1. Replace red starter solenoid safety cap.
  1. Lower vehicle to floor.
  1. Connect battery ground cable.

Mar 28, 2009 | 1996 Mercury Grand Marquis

1 Answer

93 honda prelude dohc vtec engine will not can be push started


Sounds like you accidently pulled the thin wire from you starter motor. Look at the connections at the end of the solenoid, mounted on starter motor.The thick red wire is Battery + next to that connection is a smaller male push- on terminal, locate loose wire (thin) in the same area and reconnect to male push-on terminal on solenoid or check if earth cable between body/battery to engine wasnt removed in the process.Also some vehicles you have to engage the clutch before starting, check for a switch located on clutch pedal where master cylinder connects to clutch pedal (Is clutch switch mounted and wiring connected?)

Jan 03, 2009 | 1993 Honda Prelude

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