The 1961 Fargo F100 Pickup has 8 electrical switch & relay parts with verified fitment on this page — 4 part types and 3 brands, covering both the 3.7L 225cid L6 and the 5.1L 313cid V8. Each part includes a manufacturer part number and application notes.
The switch and relay system on the 1961 Fargo F100 Pickup covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Ignition Starter Switch (3 parts), Dimmer Switch (2 parts) and Oil Pressure Sender / Switch (2 parts). The other 1 part type covers the remaining 1 part.
The 1961 Fargo F100 Pickup was sold with both the 3.7L 225cid L6 and the 5.1L 313cid V8. 6 parts fit every engine; the other 2 are engine-specific. Each part shows which engine(s) it fits.
3 brands supply electrical switch & relay parts for the 1961 Fargo F100 Pickup, led by WELLS (4 parts), ROSTRA (3 parts) and STANDARD MOTOR PRODUCTS (1 part).
Each part number listed for the 1961 Fargo F100 Pickup opens a page with every vehicle that part fits.
Axle Shift Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 1961 F100 Pickup engines | 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.
This group shows a single part: WELLS 1S1697.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 1961 F100 Pickup engines | 651404 | 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 1961 F100 Pickup engines | 1S4828 | 🇨🇦 CA | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. 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 Dimmer Switch parts for the 1961 Fargo F100 Pickup come from 2 brands — ROSTRA and WELLS. Every part fits both the 3.7L 225cid L6 and the 5.1L 313cid V8.
This group includes ROSTRA 651404 and WELLS 1S4828.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 1961 F100 Pickup engines | 630045 | 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 1961 F100 Pickup engines | US50 | 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 1961 F100 Pickup engines | 1S6151 | 🇨🇦 CA | View on Amazon |
This table covers the ignition switches that feed the starter circuit. 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.
3 Ignition Starter Switch parts for the 1961 Fargo F100 Pickup come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. Every part fits both the 3.7L 225cid L6 and the 5.1L 313cid V8.
Part numbers include ROSTRA 630045, STANDARD MOTOR PRODUCTS US50 and WELLS 1S6151.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 3.7L 225cid L6 | 501340 | 🇨🇦 CA | Terminal Type: Blade | View on Amazon |
| WELLS Fits: 3.7L 225cid L6 | 1S6685 | 🇨🇦 CA | Located in Block | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
2 Oil Pressure Sender / Switch parts are listed for the 1961 Fargo F100 Pickup, from ROSTRA and WELLS.
Part numbers include ROSTRA 501340 and WELLS 1S6685.
Buying Electrical Switch & Relay Parts for a 1961 Fargo F100 Pickup
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Some electrical switch & relay parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Ignition Starter Switch and Dimmer Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 1961 Fargo F100 Pickup?
Our catalog currently lists 8 electrical switch & relay parts for the 1961 Fargo F100 Pickup across 4 subcategories and 3 brands, covering both the 3.7L 225cid L6 and the 5.1L 313cid V8. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 1961 Fargo F100 Pickup engines?
Some do. 6 parts fit every engine; the other 2 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 1961 Fargo F100 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 1961 Fargo F100 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 1961 Fargo F100 Pickup?
First match the engine — each row shows which engine(s) the part fits. 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 1961 Fargo F100 Pickup
Electrical Switch & Relay Parts for Other Fargo F100 Pickup Years
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