This page lists 6 electrical switch & relay parts for the 1961 Checker Marathon, across 2 part types, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Every part shows its brand, manufacturer part number and fitment notes.
On the 1961 Checker Marathon, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. All 6 listed parts are Brake Light Switch (3 parts) and Horn Relay (3 parts).
The 1961 Checker Marathon was sold with both the 3.7L 226cid L6 and the 5.2L 318cid V8. All 6 parts on this page fit every engine.
The most listed brands for 1961 Checker Marathon electrical switch & relay parts are ROSTRA (2 parts), STANDARD MOTOR PRODUCTS (2 parts) and WELLS (2 parts).
Each part number listed for the 1961 Checker Marathon opens a page with every vehicle that part fits.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 1961 Marathon engines | 620126 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 1961 Marathon engines | SLS25 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: all 1961 Marathon engines | 1S5366 | 🇺🇸 US | 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.
3 Brake Light Switch parts for the 1961 Checker Marathon come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. Every part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8.
Listed part numbers: ROSTRA 620126, STANDARD MOTOR PRODUCTS SLS25 and WELLS 1S5366.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 1961 Marathon engines | 600299 | 🇺🇸 US | with 12 Volt System | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1961 Marathon engines | HR106 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: all 1961 Marathon engines | 1R1715 | 🇺🇸 US | 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.
3 Horn Relay parts are listed for the 1961 Checker Marathon, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 1961 Marathon.
Part numbers include ROSTRA 600299, STANDARD MOTOR PRODUCTS HR106 and WELLS 1R1715.
Buying Electrical Switch & Relay Parts for a 1961 Checker Marathon
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- You do not need to pick an engine: every electrical switch & relay part on this page fits both the 3.7L 226cid L6 and the 5.2L 318cid V8.
- 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 Horn Relay .
Frequently Asked Questions
How many electrical switch & relay parts fit the 1961 Checker Marathon?
Our catalog currently lists 6 electrical switch & relay parts for the 1961 Checker Marathon across 2 subcategories and 3 brands, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 1961 Checker Marathon engines?
No. On this page every electrical switch & relay part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical switch & relay problems on a 1961 Checker Marathon?
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 Checker Marathon 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 Checker Marathon?
Every part on this page already fits both the 3.7L 226cid L6 and the 5.2L 318cid V8. 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 Checker Marathon
Electrical Switch & Relay Parts for Other Checker Marathon 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.