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Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.

Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.

Northern Lights Switches and Voltage Regulators for 673 Series Generators

Our broad selection of Northern Lights Switches and Voltage Regulators are sure to help with your M673 Generator needs.

If you do not see the Northern Lights part you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly assist you.


ALTERNATOR - M16C / M20CL / M643 / L984 (12V, 14A)

$672.09

FUEL SHUT OFF SOLENOID - M673L2 (12V, STANDARD GROUND)

$355.23

STOP SOLENOID - M844K2 (12V, ISOLATED GROUND)

$226.18

OIL PRESSURE SWITCH - M773LW2 / M773LW3 / NL773LW3 (14.2 PSI, 1/8" BSPT)

$33.08

GLOW PLUG - M16C / M20CL / M20CR / M20CR2 (12V)

$31.15

VOLTAGE REGULATOR - M643 (D.C.)

$516.24

OIL PRESSURE SWITCH - M673L2 (15 PSI, N.C. 1/8 NPT ISO GROUND)

Surplus Item - Special Pricing

$21.46

TEMPERATURE SWITCH - M673 / M673L / M673L2 / M673L3 (205DEGF/95DEGC, M16 X 1.5)

$154.89

RELAY BASE W/O RETAINER - M673L2

$5.15

RELAY - M773LW2 / M773LW3 / NL773LW3 (12V, DC, 50A)

$6.48

OIL PRESSURE SENDER - M773LW2 / M773LW3 (80 PSI, STANDARD GROUND, 1/8" NPT)

$96.03

TOGGLE SWITCH - M643 / M643K / M643M / NL643 (SPDT, BLACK)

Surplus Item - Special Pricing

$13.90

HIGH EXHAUST TEMPERATURE SWITCH - M673L / NL673L (#6-32, UNC-2A)

$283.65

CIRCUIT BREAKER - M16C / M20CL / M643 / M673 (15A, DC, PUSH BUTTON RESET)

$46.73

WATER TEMPERATURE SENDER - M773LW2 / M773LW3 / NL773LW3 (250DEGF, 3/8" NPT)

$31.07

SWITCH & HARNESS ASSEMBLY - M753K (12", HIGH EXHAUST TEMPERATURE 205F N.O.)

$566.73

CIRCUIT BREAKER - M673 / M673D (AC 3A X 2A 250VAC 2-POLE)

$212.32

A.C. VOLTAGE REGULATOR - M643 / M643K / M643M (DS-71-2, TF-II-18 AND TF-I)

$724.80

CIRCUIT BREAKER - M673L2 / M673LD2 (3AMP, 250VAC, LEVER RESET)

$56.05

CIRCUIT PROTECTOR - M643 / M643K / M643M / NL643 (30A, 240V, A.C., 2 POLE)

$295.62

A.C. VOLTAGE REGULATOR - M673L2 / M673LD2 (DST-51-DFN, HARNESS WITH PLUG-IN CONNECTOR)

$880.06

VOLTAGE REGULATOR - M643 / M643K / M643M / NL643

$600.16

A.C.VOLTAGE REGULATOR - M643 / M643K / M643M / NL643 (DS-71-2K W/SLUG)

$663.58

CARBON BRUSH ASSEMBLY - M643 / M643K / M643M / NL643 (TF-II / III AND TF276K)

$75.37

ROCKER SWITCH - M643 / M643K / M643M / NL643 (SPST)

$15.87

ROCKER SWITCH - M643 / M673 / M673D / M673L

$29.66

OIL PRESSURE GAUGE - M643 / M643K / M643M / NL643 (80 PSI, 12V)

$65.59

ENGINE TEMPERATURE GAUGE - M16C / MP150C / M643 / L984 (250DEGF/121DEGC, 12V)

$39.09

TEMPERATURE SWITCH - M673 / M673L / M673L2 (95C/203F M16X1.5 STD GROUND)

$168.03

GLOW PLUG - M773LW2 (12V, M8 X 1.0, MARKED YE01)

$35.96

STARTER MOTOR (12V, 0.7KW, STANDARD GROUND)

Additional refundable core charge: $20.00 (See Details)

$111.29