Editing Z31/Rewirefuelinjectors php (section)

=== Process ===

* Disconnect the battery. Safety first!
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Remove the electrical tape from the harness segments on either side of the intake plenum.

Tip: The tape is usually sticky and nasty from heat. The best removal method is WD40 and an old rag. -
Locate the four additional leads that have been clipped and covered in heat-shrink tubing.
* Cut the “dealer installed” harness so that you have enough free length to reach from each injector to the original leads. Leave some slack for flexibility.
* Remove the heat-shrink from the original harness leads, then strip back the insulation.
* Tin the wires with solder to prep them for joining.
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Solder the wires together according to their color/function. Make sure your joints are strong and fully soldered.
* Slide heat-shrink tubing over the joints and shrink with a heat source (heat gun, lighter, etc.).
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Re-wrap the harness with new electrical tape to protect your work. Duplicate this process on the other side.