Easy lifehacks

How does a low voltage coil start a boat?

How does a low voltage coil start a boat?

Connecting the “I” wire (with it’s temporary boost in the start mode) to the resistor’s low side (where the coil is ALWAYS connected in run mode) is the SAME as connecting the “I” pole to the plus side of the coil and uses the coil’s wire to the resistor instead of adding a second wire to the coil’s positive pole.

Why does my starter relay not have an I terminal?

Some starter relays may not have the “I” terminal but that is unusual on the engines in our boats. If your engine has an electronic module in the distributor, the ballast resistor is USUALLY not installed and the voltage “boost” from the “I” terminal is not required during cranking.

How to get 12 volts to the coil?

Connect a 12 gauge marine wire from the “I” post on relay to the + post on the coil. That will deliver a full 12 volts to the coil while cranking. If you give Kurt a chance he is likely to post up a photo of the relay. You really only need to do this if you have the points type distributor with the resistor.

What should the resistance be on a Delco ignition coil?

This reading of 8.84 does indicate that the coil’s secondary windings are not putting out as much voltage as they should; the minimum acceptable resistance reading here should be 11.00, with approximately 13.5 being normal. Here’s the primary reading on the new replacement GM Delco coil before I installed it.

What should the voltage drop be on a car starter?

Connect your meter’s negative (black) lead to the battery negative (-) post. Have an assistant turn the ignition key to the Start position to crank the engine for no more than 15 seconds. Check the readout on your meter. Voltage drop on the ground side of the starter circuit should be no more than 0.2 volts.

Connecting the “I” wire (with it’s temporary boost in the start mode) to the resistor’s low side (where the coil is ALWAYS connected in run mode) is the SAME as connecting the “I” pole to the plus side of the coil and uses the coil’s wire to the resistor instead of adding a second wire to the coil’s positive pole.

Some starter relays may not have the “I” terminal but that is unusual on the engines in our boats. If your engine has an electronic module in the distributor, the ballast resistor is USUALLY not installed and the voltage “boost” from the “I” terminal is not required during cranking.

Connect a 12 gauge marine wire from the “I” post on relay to the + post on the coil. That will deliver a full 12 volts to the coil while cranking. If you give Kurt a chance he is likely to post up a photo of the relay. You really only need to do this if you have the points type distributor with the resistor.

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Ruth Doyle