Hombre S Regular Cab 4WD V6-4.3L (1999)
Positive Temperature Coefficient (PTC) Circuit Breaker: This type greatly increases its resistance when excessive current passes through it. The
excessive current heats the PTC device, as the device heats its resistance increases. Eventually the resistance gets so high that the circuit is effectively
open. Unlike the ordinary circuit breaker the PTC unit will not reset until the circuit is opened, by removing the voltage from its terminals. Once the
voltage is removed the circuit breaker will re-close within a second or two.
Circuit Protection - Fusible Links
Circuit Protection - Fusible Links
Fusible link is wire designed to melt and break continuity when excessive current is applied. It is often located between or near the battery and starter or
electrical center. Use a continuity tester or a J 39200 DMM at each end of the wire containing the fusible link in order to determine if it is broken. If
broken, it must be replaced with fusible link of the same gage size.
Repairing a Fusible Link
Important: Fusible links cut longer than 225 mm (approx. 9 inches) will not provide sufficient overload protection.
Refer to Splicing Copper Wire Using Splice Clips.
Repairing Damaged Wire Insulation
If the conductive portion of the wire is not damaged, locate the problem and apply tape around the wire. If the damage is more extensive, replace the
faulty segment of the wire. Refer to Splicing Copper Wire. Using Splice Clips and follow the instruction to repair the wire.
Wire Size Conversion Table
Wire Size Conversion Table
Splicing Copper Wire Using Splice Clips
Tools Required
J 38125-B Terminal Repair Kit
1. Open the harness.
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If the harness is taped, remove the tape.
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To avoid wiring insulation damage, use a sewing ripper in order to cut open the harness.
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If the harness has a black plastic conduit, pull out the desired wire.
2. Cut the wire.
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Cut as little wire OFF the harness as possible.
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Ensure that each splice is at least 40 mm (1.5 in) away from other splices, harness branches and connectors. This helps prevent moisture from
bridging adjacent splices and causing damage.
3. Select the proper size and type of wire.
