4 Electrical switch & relay parts are listed for the 1957 Fargo FK6 Pickup, in 3 part types, covering the 4.1L 251cid L6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The switch and relay system on the 1957 Fargo FK6 Pickup covers the switches, relays and flashers that route power to everything the driver touches. All 4 listed parts are Brake Light Switch (2 parts), Axle Shift Switch (1 part) and Horn Relay (1 part).
Every part on this page is matched to the 4.1L 251cid L6 — the only engine offered in the 1957 Fargo FK6 Pickup.
The most listed brands for 1957 Fargo FK6 Pickup electrical switch & relay parts are WELLS (3 parts) and STANDARD MOTOR PRODUCTS (1 part).
Each part number listed for the 1957 Fargo FK6 Pickup opens a page with every vehicle that part fits.
Axle Shift Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S1697 | 🇨🇦 CA | with 2 Speed Rear Axle, Terminal Block | View on Amazon |
This table covers the Axle Shift switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 1957 Fargo FK6 Pickup — WELLS 1S1697.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | SLS28 | 🇨🇦 CA | View on Amazon | |
| WELLS | 1S5368 | 🇨🇦 CA | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Brake Light Switch parts for the 1957 Fargo FK6 Pickup come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS SLS28 and WELLS 1S5368.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1R1715 | 🇨🇦 CA | This horn relay can be used for any 12 Volt, Three terminal application that does not require an internal resistorUniversal Horn Relay, 12 Volt Type Three Screw Terminals | View on Amazon |
This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1957 Fargo FK6 Pickup — WELLS 1R1715.
Buying Electrical Switch & Relay Parts for a 1957 Fargo FK6 Pickup
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 4.1L 251cid L6 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Brake Light Switch and Axle Shift Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 1957 Fargo FK6 Pickup?
Our catalog currently lists 4 electrical switch & relay parts for the 1957 Fargo FK6 Pickup across 3 subcategories and 2 brands, covering the 4.1L 251cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 1957 Fargo FK6 Pickup?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
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 1957 Fargo FK6 Pickup 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 1957 Fargo FK6 Pickup?
Every part on this page is matched to the 4.1L 251cid L6 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1957 Fargo FK6 Pickup
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