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SDS hints: Difference between revisions
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→Understanding the Relay Circuits
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*If you need to replace a wire in the bundle, these are the connector family specs:<br>[[File:Screen Shot 2023-04-03 at 9.10.15 AM.png|500x500px]]<br>In particular, the female crimp pins are Digikey order no WM2501CT-ND. | *If you need to replace a wire in the bundle, these are the connector family specs:<br>[[File:Screen Shot 2023-04-03 at 9.10.15 AM.png|500x500px]]<br>In particular, the female crimp pins are Digikey order no WM2501CT-ND. | ||
==== Understanding the Relay Circuits ==== | ==== Understanding the Relay Circuits ==== | ||
The 6-cylinder injector relay box includes the following three functions: | The 6-cylinder '''injector relay box''' includes the following three functions: | ||
* Assigning 3 additional injectors to a single ECU | * Assigning 3 additional injectors to a single ECU | ||
** In normal mode, the left connector gets the injector input signal from each of the ECUs, 3 per ECU. The right connector has the outputs to the 6 individual injectors (ground side). | ** In normal mode, the left connector gets the injector input signal from each of the ECUs, 3 per ECU. The right connector has the outputs to the 6 individual injectors (ground side). | ||
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Note: Activating both primary and secondary select signal will mirror the sides, e.g. the backup bus and ECU drives injectors 1-3 and vice versa<br> | Note: Activating both primary and secondary select signal will mirror the sides, e.g. the backup bus and ECU drives injectors 1-3 and vice versa<br> | ||
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The mixture adjust relay box includes the following functions: | The '''mixture adjust relay box''' includes the following functions: | ||
* Feeding the mixture adjust potentiometer input to both ECUs in normal mode and only to one accordingly in primary and backup mode. | * Feeding the mixture adjust potentiometer input to both ECUs in normal mode and only to one accordingly in primary and backup mode. | ||
Note: The mixture adjust relay box needs both 5V and 12V to operate. It gets the 5V from the ECUs (red primary cable or orange secondary cable) and the 12V from the yellow cable (needs to be supplied externally, switched and fused). | Note: The mixture adjust relay box needs both 5V and 12V to operate. It gets the 5V from the ECUs (red primary cable or orange secondary cable) and the 12V from the yellow cable (needs to be supplied externally, switched and fused). | ||