Question about Cadillac Fleetwood

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My 1977/78 fleetwood limo has different wiring in distributor , it has the 2 normal wires from the pickup coil that Join into a 3 pin plug which has other wires that go to a small type of electrical unit on the inner guard the the wires from that go into the harness can anyone tell me what that unit is for

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Thats a pick up module.

Posted on Feb 05, 2010


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I have a 1983 s 10 distributor with vacuum advance, there is a module in the distributor that has 4 prongs on it, 2 go to the coil pick up in the distributor but i dont know where the other 2 go. this...

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No fire at the spark plugs

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Connect a voltmeter set on ac volts to the pickup coil wires (disconnected from the module) and crank the engine.

2. The pick-up coil output should be more than 0.7v AC. If not, replace the pick up coil and distributor shaft.

3. Visually inspect the condition of the magnet on top of the distributor shaft to be in good condition. If not, replace the distributor

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4. Check acv output from the pick up coil while cranking the engine at a normal cranking speed.

5. If output is less than 700 mv replace the distributor shaft with a new one.

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