Question about 2005 Seat Alhambra 1.9

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Second wire in engine compartment fuse box melted? where does wire go?

Second earth wire melted fuse box where does wire go?

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Secondary ground wire fried!!? this tells me that your main ground did lose its contact somewhere.usually opposite the battery side. when this happens, and you try to say, start the car, all that amperage will follow any available ground it can find, usually through the actual wiring harness that covers the entire car. see, most vehicles have 2 ground cable setups..a main, and a secondary.. the main consists of the large cables as well as "ground straps" which look flat and are made of braided wire and run from the car body to the block and areas like that. now if these fail or loose connection, the only other source for grounding will be the loop i the harness which is not big enough to handle the amperage needed to run the starter motor when activated by the ignition key. now since yours burnt up, it must be replaced and all ground wires checked..also check for shorts in the system elsewhere, with a meter if necesary, you can also disconnect the battery entirely and connect a 6 amp battery charger directly to the cables(like charging the car without the battery) and if there is a short, the guage on the charger will peg over without fear of fire you will hear a buzzing sound where the short is (usually)..I have used this trick to find shorted blower heater motors or wiper motors on big trucks..if this ground wire is wrapped into the actual harness setup, you will need to replace it by cutting loose the old one, run a new wire into any part of the system thats not damaged, usually near the headlight fixtures, then run it back to the original starting point ,then its process of elimination as to what will work and what wont, remember, all circuits will function some with the charger attached instead of the battery, you will hear a buzzing or humming especially when checking the radio..good luck

Posted on Jan 13, 2013

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Posted on Jan 02, 2017

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Wiring an accessory in passenger compartment


Fish your ground wire down to the driver's side underneath the dash. There you will find all sorts of metal connections to the frame. Just loosen a screw or nut, and slide the wire and connector underneath and tighten. Look around the fuse box, there should also be a ground connection somewhere there. You can also splice or tap into an existing ground wire.

May 14, 2015 | 2004 Volvo S40

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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
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Insulator on coil lead melted on morris oxford 1969


Hi sounds like you have a bad earth issue or faulty or wrong coil Morris usually run a Ballast resistor in the ignition to coil as the standard coil is about 9 volts, if you have rewired with normal wire you will have 12 volts at the coil overheating it
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