Sorenson TB-1, a vintage ignition terminal block
type: Unknown Type
Vendor: CorvairFarmer
Description:
:
🧩 Part Overview
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Part Number: Sorenson TB-1
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Type: Ignition Terminal Block
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Function: Provides a secure junction point for ignition coil and distributor wiring
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Mounting: Typically firewall or bracket-mounted
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Connector Style: Dual screw terminals with insulator base
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Country of Origin: Made in USA
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Status: NOS units occasionally found in bulk lots or surplus packaging
🚗 Confirmed Fitment
While not tied to a specific vehicle model, TB-1 blocks were commonly used in:
| Application Type | Notes |
|---|---|
| Universal GM | 1950s–1970s ignition systems (points-style) |
| Aftermarket kits | Mallory, Sorensen, and Delco-style conversions |
| Marine & Industrial | Small-block GM engines in non-automotive platforms |
| Custom builds | Firewall-mounted junctions for coil/distributor |
These blocks were often used in 6V and 12V systems where clean wiring and serviceability were key.
🔁 Cross Reference Numbers
| Brand | Equivalent Part Number |
|---|---|
| Sorensen | TB-1 |
| Niehoff | S481 |
| Echlin | U1962 |
| Others | Generic terminal block for ignition coil/distributor junction |
These interchange numbers confirm compatibility across multiple vintage catalogs