1976 Fiat Spider Automatic TransFACTORY OEM SERVICE PROCEDURE

MARELLI Regulators: Specifications

Application Specification
Alternator Test RPM
  All Models 5000 RPM
1st Stage Testing (Amps)
  RC 2/12E Regulator 40-45
  All Others 25-35
2nd Stage Testing (Amps)
  RC 2/12B Regulator 2-12
  All Others 10-14
2nd Stage Testing (Volts)
  All Models 14.2±.3
Resistance Values (Ohms)
  Plug "15" & Ground
    RC 2/12B Regulator 27.7±2
    All Others 27.2±2
  Plug "15" & "67" W/Contacts Open
    RC 2/12E Regulator 3.7±.2
    All Others 5.6±.3
Armature Air Gap
  Point "A" 055-.063"
  Point "B" 014-.022"
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.