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UK Car Repair/Auto electric short circuit

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Question
My question is concerning a possibility of a short circuit in the auto electrical system and is quite general in nature. The ignition key gets slightly more than warm when in use. I have replaced the barrel which incidentally is a plastic casing. It is connected to the car wiring harness via a 5-terminal female socket. The insulation of the wires and the socket have melted to an extent but still seems usable. This is the second barrel I have replaced. I am thinking of replacing the socket just in case it helps to reduce any resistance. How do I check for any possible shorting in the circuit.

Answer
Open the connector for the ignition switch loom and inspect, a loose connection, or a spade connector/bullet connector that isn't crimped properly(eg. only holding half the wire strands)will get hot.

Trace each the melted wires to their most local connection and inspect.

If all connections are good then there's a massive drain somewhere, though that would be causing problems with every system on the car. I'm pretty sure it will be a bad connection at the ignition loom connector.

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Christian Boyce

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Extensive knowledge of cars designed between 1900 and 2000. I have an interest in keeping these early cars on the road - I love the classics and want to keep them around. I'M BACK!. A LOT of reasonably classic cars are going TO SCRAP with no good reason. I want to stop that. If it's cool and you're having trouble with it, just ask. Also I'm looking for a job. I can do bodywork too. Not welding yet. Everything else and more though.

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Too much to list............ Honest, I tried.

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Elec-Installation (bolton college) Digital and analogue Electronics (Bol Col.) Digital Microprocessor Electronics (Bol Col.) - Pc Inst, Diagnosis/Repair NVQ3 Bury College.

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Man of the match!, 1st place Blackburn indoor karting, 15th overall RallyQuest 2009 (Rally driving).

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