4-Wire Voltage Regulator Rectifier Fit For Honda CB CL SL 100 125 31700-107-782

Features:
OEM quality, direct replacement to your original unit.
Perfect fit and ready to install.
Always use a sealant to mount the cable gland joint.
All products shipped are tested.
Instruction is NOT included.

Attention:
This regulator is not suitable for lithium-ion batteries! The battery or other electric parts can be damaged!

Specifications:
Condition: Aftermarket 100% Brand New
Quanity: 1 PC
Type: Voltage Regulator / Rectifier

Other specifications :
Number of wires: 4
Number of plugs: 1
Number of pins: 4

Wiring Diagram:
Yellow - AC
Pink - AC
Red - Battery +
Green - Ground -

Replacement Part Number:
31700-107-782

Fits Make/Model/Year:
Fit for Honda CB100 CB100A
Fit for Honda CB100 CB100K1
Fit for Honda CB100 CB100K2
Fit for Honda CB100 Super Sport 1970-1973
Fit for Honda CB125 CB125S 1973-1975
Fit for Honda CL100 CL100A
Fit for Honda CL100 CL100S
Fit for Honda CL100 CL100S2
Fit for Honda CL100 CL100S3
Fit for Honda CL100 CL100K1
Fit for Honda CL100 CL100K2
Fit for Honda CL100 1970-1973
Fit for Honda CL100S Scrambler 1970-1973
Fit for Honda CL125S Scrambler 1973-1974
Fit for Honda SL100 SL100A
Fit for Honda SL100 SL100K1
Fit for Honda SL100 SL100K2
Fit for Honda SL100 SL100K3
Fit for Honda SL100 Motosport 100 1970-1973
Fit for Honda SL125 SL125A
Fit for Honda SL125 SL125K1
Fit for Honda SL125 SL125K2
Fit for Honda SL125 Motosport 125 1971-1973

(Compatibility Chart is for reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package includes:
1x Voltage Regulator Rectifier

Note:
Signs that your regulator needs replacing:
Depending on the location of the regulator rectifier, the part can easily overheat. Other causes for a dead regulator rectifier center on the battery. Ground connections are important for good voltage, and if there is a faulty voltage, the regulator rectifier can run hot. Bad grounding, corroded battery connection and poor or loose battery connections will cause faulty voltage too.

There are generally two ways for the regulator rectifier to fail:
The first deals with diode burnout, resulting in battery drain. It is easy to assume that the issue is a bad battery because of symptoms such as dimming headlights and poor starts. Checking the voltage with a voltmeter versus relying on symptoms alone will prove highly beneficial. If the voltage drops below 13 volts, the motorcycle will begin to drain the battery and eventually the engine will stop. Check for bad connections and corrosion; these can also cause voltage issues.
The other failure type is shunt regulator burnout, where the regulator rectifier fails to control the voltage, resulting in battery overcharge. Again, a voltmeter will be useful for diagnosis. Though generally, readings above 17 volts mean the regulator rectifier is not converting the excess power correctly and all of that excess voltage may cause the headlights to become extremely bright and then blow.

The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer fits.

MOTORCYCLE PART FITMENT GUIDE

This part fits vehicles listed in the description and compatibility chart ONLY

✔ 100% FITMENT VERIFICATION REQUIRED

This aftermarket/remanufactured part requires matching:

• Exact Year/Make/Model/Engine CC

• OEM Part # (stamped on your original component)

• Physical Measurements (see dimension diagrams in photos)

CRITICAL CHECK POINTS:

[✓] Compare mounting hole patterns

[✓] Match electrical connectors (if applicable)

[✓] Verify clearance requirements

[✓] Check sub-model variations (e.g., ABS vs non-ABS)

FREE FITMENT CONFIRMATION:

Send us:

    ✅ VIN (17-digit)   ✅ Clear photos of your original part    ✅ OEM numbers from your current component