The 1975 Fiat 124 has 19 electrical connector parts with verified fitment on this page — 7 part types and 4 brands, covering the 1.8L L4 engine. Each part includes a manufacturer part number and application notes.
The connector system on the 1975 Fiat 124 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Fuel Pump / Circuit Opening Relay Connector (4 parts), Horn Relay Connector (4 parts) and Neutral Safety Switch / Range Sensor Relay Connector (4 parts). The other 4 part types cover the remaining 7 parts.
Every part on this page is matched to the 1.8L L4 — the only engine offered in the 1975 Fiat 124.
The most listed brands for 1975 Fiat 124 electrical connector parts are STANDARD MOTOR PRODUCTS (10 parts), UNITED MOTOR PRODUCTS (4 parts) and WELLS (4 parts), plus 1 more brand.
Each part number listed for the 1975 Fiat 124 opens a page with every vehicle that part fits.
Fuel Pump / Circuit Opening Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP3810 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Polygon | View on Amazon |
| STANDARD MOTOR PRODUCTS | S654 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 1 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON123 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: FemaleTerminal Type: Spade | View on Amazon |
| WELLS | 1P1143 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 5Wiring Harness Length: 12.0 In | View on Amazon |
This table covers the harness connectors at the Fuel Pump / Circuit Opening Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Fuel Pump / Circuit Opening Relay Connector parts for the 1975 Fiat 124 come from 3 brands — STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS HP3810, STANDARD MOTOR PRODUCTS S654 and UNITED MOTOR PRODUCTS CON123, among others listed above.
Fuel Pump CutOff Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2212 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Pump CutOff Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2212.
Horn Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP3810 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Polygon | View on Amazon |
| STANDARD MOTOR PRODUCTS | S654 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 1 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON123 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: FemaleTerminal Type: Spade | View on Amazon |
| WELLS | 1P1143 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 5Wiring Harness Length: 12.0 In | View on Amazon |
This table covers the harness connectors at the Horn Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Horn Relay Connector parts are listed for the 1975 Fiat 124, from STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS HP3810, STANDARD MOTOR PRODUCTS S654 and UNITED MOTOR PRODUCTS CON123, among others listed above.
Neutral Safety Switch / Range Sensor Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP3810 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Polygon | View on Amazon |
| STANDARD MOTOR PRODUCTS | S654 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 1 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON123 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: FemaleTerminal Type: Spade | View on Amazon |
| WELLS | 1P1143 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 5Wiring Harness Length: 12.0 In | View on Amazon |
This table covers the harness connectors at the Neutral Safety Switch / Range Sensor Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Neutral Safety Switch / Range Sensor Relay Connector parts are listed for the 1975 Fiat 124, from STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS HP3810, STANDARD MOTOR PRODUCTS S654 and UNITED MOTOR PRODUCTS CON123, among others listed above.
Oil Pressure Sender / Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S1634 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the harness connectors at the Oil Pressure Sender / Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S1634.
Trailer Tow Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP3810 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Polygon | View on Amazon |
| STANDARD MOTOR PRODUCTS | S654 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 1 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON123 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: FemaleTerminal Type: Spade | View on Amazon |
| WELLS | 1P1143 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 5Wiring Harness Length: 12.0 In | View on Amazon |
This table covers the harness connectors at the Trailer Tow Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Trailer Tow Relay Connector parts are listed for the 1975 Fiat 124, from STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS HP3810, STANDARD MOTOR PRODUCTS S654 and UNITED MOTOR PRODUCTS CON123, among others listed above.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 399002 | 🇺🇸 US 🇨🇦 CA | AccessoryUniversal Switch for Washer Pump System | View on Amazon |
This table covers the harness connectors at the Washer Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 1975 Fiat 124 — WAI GLOBAL 399002.
Buying Electrical Connector Parts for a 1975 Fiat 124
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Confirm you have the 1.8L L4 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Fuel Pump / Circuit Opening Relay Connector and Horn Relay Connector .
Frequently Asked Questions
How many electrical connector parts fit the 1975 Fiat 124?
Our catalog currently lists 19 electrical connector parts for the 1975 Fiat 124 across 7 subcategories and 4 brands, covering the 1.8L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical connector problems on a 1975 Fiat 124?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1975 Fiat 124 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1975 Fiat 124?
Every part on this page is matched to the 1.8L L4 engine. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1975 Fiat 124
Electrical Connector Parts for Other Fiat 124 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.