What are the terminals on an ignition coil?
The side terminals of the coil are marked positive (+) and negative (–) and these are where you can measure the resistance of the primary windings. Set the multimeter to the 200-ohm setting and attach the meter’s leads corresponding to the terminal markings, red being positive and black being negative.
What should secondary resistance be on ignition coil?
Connect your meter leads across the two secondary terminals located to one side of the coil body. Consult your vehicle repair manual to locate the secondary terminals. Compare your readings to the specifications in your repair manual. A common secondary resistance may range between 6,000 to 12,000 Ohms.
What should the primary coil resistance be on a corvette?
The normal primary reading for 12V (1956 and later) Corvettes on the primary side is 1.6, although a range of 1.5 to 1.7 is acceptable. Next, you’ll want to measure the resistance of the secondary coil, and this is the real business-end of the spark-producer.
Where do you connect a meter to an ignition coil?
Connect your meter leads to the primary terminals at the bottom of the ignition coil. Testing a coil-on-plug (COP) type ignition coil is similar to testing other ignition coils. To locate the primary and secondary terminals, consult your vehicle repair manual, if necessary. Watch the next video for a testing example.
How many ohms are in a Lucas 12V coil?
Lucas 12V coils (17M12) – 4 to 4.5 Ohms between the low-tension terminals. Lucas 6V coils (17M6) – 1.5 to 2.2 Ohms between the low-tension terminals. Either coil type – 4 KOhms between either l-t terminal and the h-t terminal, infinte Ohms between any terminal and the case.
The side terminals of the coil are marked positive (+) and negative (–) and these are where you can measure the resistance of the primary windings. Set the multimeter to the 200-ohm setting and attach the meter’s leads corresponding to the terminal markings, red being positive and black being negative.
Connect your meter leads across the two secondary terminals located to one side of the coil body. Consult your vehicle repair manual to locate the secondary terminals. Compare your readings to the specifications in your repair manual. A common secondary resistance may range between 6,000 to 12,000 Ohms.
How to test the coil on a Ford 8N?
How to Test the Coil on a Ford 8N. Original Ford 8N coils are six volts and square, while most aftermarket coils are cylindrical and twelve volts. Set the multimeter to the ohms setting. Place the black prong to the negative coil terminal and the red prong to the positive coil terminal. This will give a resistance, or ohm, reading, which,…
Where is the positive coil on an engine?
The two primary terminals are usually labeled positive and negative. Check the engine repair manual for your make and model car before beginning work. Locate the positive coil wire, which runs from the ignition switch to the positive terminal of the ignition coil.
Where is the negative coil wire on a car?
Locate the negative coil wire. On most cars made before 1980, this wire connects to the points switch, which is located on the distributor. The distributor connects all of the spark plug wires. Most newer cars do not have a points switch, so that terminal is connected to ground or the negative terminal of the battery.
Where is the primary winding on an ignition coil?
If your car uses a negative ground and you have a coil with primary and secondary terminals, the primary winding is connected to the terminal on the coil that is marked “+” or “Bat.” This is the terminal that receives voltage from the battery.
Where does the positive ground terminal go on an ignition coil?
For positive ground the “+” terminal goes to the distributor (to be grounded on the engine block). For negative ground the “-” terminal goes to the distributor (to be grounded on the engine block).
Locate the negative coil wire. On most cars made before 1980, this wire connects to the points switch, which is located on the distributor. The distributor connects all of the spark plug wires. Most newer cars do not have a points switch, so that terminal is connected to ground or the negative terminal of the battery.
How is the ignition coil connected to the ignition switch?
Connect the positive terminal of the ignition coil to the “On” terminal of the ignition switch. Connect the negative terminal of the ignition coil to the coil terminal of the distributor. Reconnect the negative battery cable to the negative post on the battery.
What do you need to know about later issue ignition coils?
Later issue ignition coils are marked “+” and “-” on the primary terminals. These are more no-brainers, as you only need to match the terminal markings to the battery posts. For positive ground the “+” terminal goes to the distributor (to be grounded on the engine block).