56 Electrical parts are listed for the 1989 Geo Spectrum, in 9 part types, covering both the 1.5L L4 and the 1.5L L4 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1989 Geo Spectrum, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 35 parts of the 56 listed are Horn (17 parts), Starter Motor (10 parts) and Alternator / Generator (8 parts). The other 6 part types cover the remaining 21 parts.
The 1989 Geo Spectrum was sold with both the 1.5L L4 and the 1.5L L4 Turbocharged. 33 parts fit every engine; the other 23 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1989 Geo Spectrum electrical parts are FIAMM (11 parts), STANDARD MOTOR PRODUCTS (9 parts) and TERREPOWER (5 parts), plus 14 more brands. Quality grades include Standard Replacement and Accessory Replacement.
11 parts on this 1989 Geo Spectrum page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 3341712 (Alternator / Generator) and ACDELCO 4BC36 (Battery Cable). Click any part number to see every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 1.5L L4 | 3341712 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| TERREPOWER Popular Fits: all 1989 Spectrum engines | 14732 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| ACDELCO Fits: 1.5L L4 Turbocharged | 3341711 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP Fits: 1.5L L4 Turbocharged | 14732 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: all 1989 Spectrum engines | 14732 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 1.5L L4 | 14733 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: all 1989 Spectrum engines | 14732 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.5L L4 | 14733 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
8 Alternator / Generator parts are listed for the 1989 Geo Spectrum, from ACDELCO, TERREPOWER, REMY and 2 other brands. ACDELCO 3341712 carries the "Popular" badge. 3 parts fit every engine; the other 5 are engine-specific.
This group includes ACDELCO 3341712, TERREPOWER 14732 and ACDELCO 3341711 and the remaining parts above.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: all 1989 Spectrum engines | S6523B | 🇺🇸 US 🇨🇦 CA | AGMAGM | View on Amazon |
| BOSCH Fits: all 1989 Spectrum engines | S675DT | 🇺🇸 US 🇨🇦 CA | AGMValve Regulated | View on Amazon |
| DEKA Fits: all 1989 Spectrum engines | 9A3585 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE Fits: all 1989 Spectrum engines | MX35 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 35 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
4 Battery parts for the 1989 Geo Spectrum come from 3 brands — BOSCH, DEKA and EXIDE. Every part fits both the 1.5L L4 and the 1.5L L4 Turbocharged.
Listed part numbers: BOSCH S6523B, BOSCH S675DT and DEKA 9A3585, plus the other parts above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 1989 Spectrum engines | 4BC36 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 1989 Spectrum engines | A224 | 🇺🇸 US 🇨🇦 CA | Length: 22 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | 7204C | 🇺🇸 US 🇨🇦 CA | BlackTop Mount | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | 7254C | 🇺🇸 US 🇨🇦 CA | Federal Wire | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | A364 | 🇺🇸 US 🇨🇦 CA | Battery Cable Configuration: Top Mount | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: all 1989 Spectrum engines | 4242 | 🇺🇸 US 🇨🇦 CA | 4 Gauge42" Cable | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
6 Battery Cable parts are listed for the 1989 Geo Spectrum, from STANDARD MOTOR PRODUCTS, ACDELCO and UNITED MOTOR PRODUCTS. ACDELCO 4BC36 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.
This group includes ACDELCO 4BC36, STANDARD MOTOR PRODUCTS A224 and STANDARD MOTOR PRODUCTS 7204C and the remaining parts above.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: all 1989 Spectrum engines | 00350 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal | View on Amazon |
| DEKA Fits: all 1989 Spectrum engines | 01056 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal Lead Free | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
2 Battery Terminal parts for the 1989 Geo Spectrum come from DEKA. Every part fits both the 1.5L L4 and the 1.5L L4 Turbocharged.
This group includes DEKA 00350 and DEKA 01056.
Engine Control Module (ECM Computer)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BSE Fits: 1.5L L4 | EM8546 | 🇺🇸 US 🇨🇦 CA | Blue Streak Electronics Premium QualityReman | View on Amazon |
| BSE Fits: 1.5L L4 | EM6208 | 🇺🇸 US 🇨🇦 CA | Blue Streak Electronics Premium QualityReman | View on Amazon |
| BSE Fits: 1.5L L4 Turbocharged | EM8547 | 🇺🇸 US 🇨🇦 CA | Blue Streak Electronics Premium QualityReman | View on Amazon |
| CARDONE Fits: 1.5L L4 | 778546 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| CARDONE Fits: 1.5L L4 Turbocharged | 778547 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| GM GENUINE Fits: 1.5L L4 | 88999157 | 🇺🇸 US 🇨🇦 CA | RemanufacturedLocal Programming Required | View on Amazon |
This table covers the engine-control modules that run fuel, spark and emissions.
6 Engine Control Module (ECM Computer) parts are listed for the 1989 Geo Spectrum, from BSE, CARDONE and GM GENUINE.
This group includes BSE EM8546, BSE EM6208 and BSE EM8547 and the remaining parts above.
Flasher
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Fits: all 1989 Spectrum engines | 758 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty Electronic FlasherUniversal Fit | View on Amazon |
| TRIDON / NOVITA Fits: all 1989 Spectrum engines | EP34 | 🇺🇸 US 🇨🇦 CA | Electronic Flasher | View on Amazon |
This table covers the flasher units that blink the turn signals and hazards.
2 Flasher parts for the 1989 Geo Spectrum come from 2 brands — BUSSMANN and TRIDON / NOVITA. Every part fits both the 1.5L L4 and the 1.5L L4 Turbocharged.
This group includes BUSSMANN 758 and TRIDON / NOVITA EP34.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 1.5L L4 | 72112 | 🇺🇸 US 🇨🇦 CA | Freeway BlasterAccessory Horn | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 7211223 | 🇺🇸 US 🇨🇦 CA | Accessory Horn (Louder)FWY Blaster | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: all 1989 Spectrum engines | 7200223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Blade Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: all 1989 Spectrum engines | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Popular Fits: all 1989 Spectrum engines | 7250522 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Popular Fits: all 1989 Spectrum engines | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
| ACDELCO Fits: all 1989 Spectrum engines | E1905E | 🇺🇸 US 🇨🇦 CA | Gold2 Pin Connection | View on Amazon |
| FIAMM Fits: all 1989 Spectrum engines | 7250622 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | HN17T | 🇺🇸 US 🇨🇦 CA | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | HN18 | 🇺🇸 US 🇨🇦 CA | High Output Low Tone | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | HN19 | 🇺🇸 US 🇨🇦 CA | High Tone | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | HN19T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1989 Spectrum engines | HN20 | 🇺🇸 US 🇨🇦 CA | Low Tone | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
17 Horn parts for the 1989 Geo Spectrum come from 3 brands — FIAMM, STANDARD MOTOR PRODUCTS and ACDELCO. The "Popular" part is FIAMM 72112. 16 parts fit every engine; the other 1 is engine-specific.
The Accessory Replacement section lists 6 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 72112 is listed in this group.
In the Standard Replacement grade, FIAMM, STANDARD MOTOR PRODUCTS and ACDELCO supply 11 parts: built to original-equipment specification. A representative part number is FIAMM 7200223.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REMY Popular Fits: 1.5L L4 | 16884 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Popular Fits: 1.5L L4 Turbocharged | 26038 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| BOSCH Fits: 1.5L L4 Turbocharged | SR399X | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP Fits: 1.5L L4 Turbocharged | 16883 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 1.5L L4 | 16880 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 1.5L L4 Turbocharged | 16883 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 1.5L L4 | 16880 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.5L L4 | 16880 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.5L L4 | 16879 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.5L L4 Turbocharged | 16883 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
10 Starter Motor parts are listed for the 1989 Geo Spectrum, from REMY, TERREPOWER, PURE ENERGY and 2 other brands. REMY 16884 carries the "Popular" badge.
Voltage Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 1989 Spectrum engines | 1V1073 | 🇺🇸 US 🇨🇦 CA | with 60 Amps Alternator | View on Amazon |
This table covers the regulators that control alternator output voltage.
This group shows a single part: WELLS 1V1073.
Buying Electrical Parts for a 1989 Geo Spectrum
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Some electrical 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Horn and Starter Motor .
Frequently Asked Questions
How many electrical parts fit the 1989 Geo Spectrum?
Our catalog currently lists 56 electrical parts for the 1989 Geo Spectrum across 9 subcategories and 17 brands, covering both the 1.5L L4 and the 1.5L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1989 Geo Spectrum engines?
Some do. 33 parts fit every engine; the other 23 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 problems on a 1989 Geo Spectrum?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 1989 Geo Spectrum 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 1989 Geo Spectrum?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1989 Geo Spectrum
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