Pontiac Fiero 1984-1988 Repair Guide

Fusible Link

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Added protection is provided to all battery feed circuits and other selected circuits by a fusible link. This link is a short piece of copper wire approximately 4 inches long, inserted in series with the circuit and acts as a fuse. The link is two (2) or more gauges smaller in size than the circuit wire it is protecting and will burn out without damage to the circuit in case of current overload.

LOCATION





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Fig. Fig. 1 Location of the fusible links in the right hand front of the engine compartment next to the battery junction block



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Fig. Fig. 2 Fusible links C and D are located in the forward lamp harness to the right of the brake master cylinder



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Fig. Fig. 3 Location of fusible link G at the lower left hand front of the engine at the starter solenoid

The Fiero is equipped with up to nine fusible links. Most of them are located at the RH front of the engine compartment, at the battery junction block. There is one at the forward lamp harness, to the right of the brake master cylinder. The last one is located at the lower LH front of engine, at the starter solenoid. Refer to the "Fusible Link Location" illustrations in this section.

Power Distribution
  1. Fusible link A-Feeds the ignition switch
  2.  
  3. Fusible link B-Feeds the vehicle lighting
  4.  
  5. Fusible link C-Feeds the headlamp door module
  6.  
  7. Fusible link D-Feeds the headlamp door module
  8.  
  9. Fusible link E-Feeds the charging system
  10.  
  11. Fusible link F-Feeds the electronic control module (ECM)
  12.  
  13. Fusible link G-Feeds the starter solenoid and fuel system
  14.  
  15. Fusible link H-Feeds the ignition system
  16.  
  17. Fusible link X-Feeds the electro-hydraulic power steering
  18.  

REPLACEMENT





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Fig. Fig. 4 Fusible links may be repaired by removing the damaged piece and soldering a new piece of wire in its place


CAUTION
When replacing fusible links, only use the correct amperage replacement fusible links. Each link is color coded to indicate the amperage rating. Damage to the electrical system may result if the incorrect fusible links are used.

Very Important: disconnect the negative (-) battery cable.

  1. Locate the burned out link.
  2.  
  3. Strip away all melted harness insulation.
  4.  
  5. Cut the burned link ends from the circuit wire.
  6.  
  7. Strip the circuit wire back approximately 1 / 2 inch to allow soldering of new link.
  8.  
  9. Using a fusible link four (4) gauges smaller than the protected circuit (approximately 10 inches long), solder a new link into the circuit.
  10.  

Use only resin core solder. Under no circumstances should an acid solder be used nor should a link be connected in any other manner except by soldering. Use of acid core solder may result in corrosion.

  1. Tape the soldered ends securely, using suitable electrical tape.
  2.  
  3. After taping the wire, tape the harness leaving an exposed loop of wire approximately 5 inches in length.
  4.  
  5. Reconnect the negative (-) battery cable and check for operation of the affected circuit.
  6.  

 
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