195-7336 Engine Wiring Harness for Caterpillar 322C 325C

195-7336 ECM Wiring Harness for Caterpillar 3126B Engine

The 195-7336 ECM wiring harness is supplied for Caterpillar 3126B engine electrical system repair. It is commonly searched as 195-7336, 1957336, CA1957336, 18 AWG ECM wiring harness, CAT 3126B engine wiring harness, Caterpillar harness assembly, CAT 322C wiring harness or CAT 325C engine harness.

This page focuses on 195-7336 as the main part number. The no-hyphen format 1957336 and reference format CA1957336 are included for search and parts matching. Final fitment should be confirmed by the old harness number, connector layout, plug shape, cable branch position, harness length and engine arrangement before ordering.

Engine and Machine Reference

Common engine reference for this wiring harness is the Caterpillar 3126B engine. Common machine references include Caterpillar 322C, 322C FM, 322C L, 325C, 325C FM, 325C L and M325C excavator applications.

This harness is used in the engine electrical system and ECM wiring area. It helps connect engine control components, sensors and related electrical circuits according to the original machine wiring layout.

Machine model alone is not enough for final confirmation. Caterpillar machines may use different harness configurations depending on engine arrangement, serial range, electrical layout, machine configuration and previous repair history. The removed wiring harness and old part number are more reliable than the model name alone.

Part Number and Reference Notes

195-7336 is the main identifying number of this product page. 1957336 is the no-hyphen writing format and should be kept on the page for buyers who search without the dash.

CA1957336 may appear in aftermarket search results or supplier references for the same Caterpillar wiring harness direction. It is included as a reference number, but the old harness number and physical connector layout should still be checked before ordering.

Do not mix this page with unrelated CAT wiring harness numbers unless the harness structure is confirmed. Similar harnesses may differ in connector count, plug shape, wire branch position, cable length, protective sleeve layout, clip position and engine-side routing.

How to Confirm the Correct Wiring Harness

Before ordering 195-7336, compare the removed wiring harness carefully. Wiring harnesses can look similar in photos, but small differences in plug type, cable length or branch routing may affect installation.

• Confirm whether the old part number is 195-7336 or 1957336.

• Check whether the engine reference is Caterpillar 3126B.

• Check whether the machine reference is CAT 322C, 325C or a related model using the same harness arrangement.

• Compare the connector count, connector shape and plug position.

• Check cable branch layout, harness length, protective sleeve position and mounting clips.

• Send photos of the old harness number, connectors, branch layout, full harness shape and engine nameplate before quotation if you are not sure.

Common Wiring Harness Failure Symptoms

An engine wiring harness may need replacement when the machine has intermittent electrical faults, poor sensor signal, loose connector contact, damaged insulation, broken wires, short circuit, unstable ECM communication or engine warning codes.

Before replacing the harness, check the connector pins, sensor plugs, ECM connector, grounding points, wire insulation, routing position and related electrical components. Some faults may be caused by connector corrosion, damaged sensors, poor ground or previous wiring repair rather than the harness alone.

If the old harness failed because of heat damage, oil contamination, vibration, incorrect routing or poor fixing clips, the root cause should be corrected before installing the replacement harness. Otherwise, the new harness may be damaged again during operation.

Installation and Testing Notes

Before installation, turn off the machine power and inspect the original routing of the removed harness. Compare all connectors and branches before connecting the replacement harness.

During installation, keep the harness away from sharp edges, hot surfaces, moving parts and high-vibration areas. Make sure each connector is locked securely and the harness is fixed in the correct routing position.

After installation, check whether the engine starts normally and whether related electrical functions respond correctly. If warning codes or signal faults remain, recheck the old part number, connector position, sensor circuit and ECM connection before further operation.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 195-7336 wiring harness is suitable for Caterpillar 3126B engine electrical repair when the old harness is damaged, aged, shorted, corroded or unable to provide stable electrical connection.

For parts distributors, it can be supplied as a CAT 3126B engine wiring harness reference for Caterpillar 322C and 325C series repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old harness number, machine model, engine model and photos of the old harness from multiple angles.

FAQ

What is the main product on this page?

This page is for the 195-7336 ECM wiring harness used for Caterpillar 3126B engine electrical system repair.

Is 1957336 the same search format as 195-7336?

1957336 is the no-hyphen writing format of 195-7336. Buyers may search either format, so both formats can be kept on the page.

What is CA1957336?

CA1957336 is a reference format sometimes used in aftermarket parts listings for the same harness direction. Please still confirm the old harness number, connector layout and physical structure before ordering.

Which engine should be checked for this harness?

The main engine reference is Caterpillar 3126B. Please check the engine model and old harness number before ordering.

Which Caterpillar machines are common references?

Common references include Caterpillar 322C, 322C FM, 322C L, 325C, 325C FM, 325C L and M325C excavator applications. Final confirmation should still be based on the old harness and connector layout.

Can I confirm this wiring harness by machine model only?

No. Machine model is only a reference. Please check the old part number, connector count, plug shape, cable length, branch routing and engine arrangement before ordering.

What photos should I send before ordering?

Please send photos of the old harness number, full harness shape, connector ends, cable branches, protective sleeves, engine nameplate and machine nameplate. These photos help confirm whether 195-7336 / 1957336 is the correct wiring harness.