Syvecs Forums

Hi,
Can the 2 wires from my CBR600 Denso 129700-3881 be directly wired to the TTL inputs in the ECU or do I need to add resistors?

One wire of the coil would go to a 12v supply, the other would go to the relevant ecu control output, and would need configured correctly.

And as 2 wires, I would assume ( and you need to confirm 100% ) they are not TTL coils, but regular inductive coils.

kko110 wrote: ↑Thu Aug 01, 2024 3:52 am Hi, Basketball Stars 2
Can the 2 wires from my CBR600 Denso 129700-3881 be directly wired to the TTL inputs in the ECU or do I need to add resistors?

Ensure that the output voltage from the Denso 129700-3881 is compatible with the TTL input levels of the ECU. TTL inputs typically accept voltages from 0 to 5V. If the output from the Denso unit is already within the TTL range (usually around 0-5V), you can connect it directly to the TTL inputs of the ECU. If there is a chance the output voltage exceeds 5V or if you are unsure about the compatibility, using resistors to create a voltage divider may be necessary to step down the voltage.

kko110 wrote: ↑Thu Aug 01, 2024 3:52 am Hi,tunnel rush
Can the 2 wires from my CBR600 Denso 129700-3881 be directly wired to the TTL inputs in the ECU or do I need to add resistors?

Hi kko110,
before wiring directly to the TTL inputs, make sure to check the voltage levels of the Denso 129700-3881 outputs.
TTL inputs usually operate at 5V logic, so if the Denso outputs are higher (like 12V), you’ll need to step it down with a resistor or a level shifter to avoid damaging the ECU.