Racepak.com

Hi,
Just a couple of quick questions about the SC1000. First one is regarding the WOT switch input.
I've got the logger in an auto car at the moment so don't need the wot switch but would like to log the transbrake release instead.
My question is can the wot switch be connected to +12v? My thought was to put one connector I'd the wot switch circuit to 12v, the other to the transbrake output of the delay box. That way when transbrake is activated, both connectors will be at +12v and the logger will show 'true'. Once the transbrake releases, the wot circuit should then show false. Can it work this way or will 12v on the wot circuit damage the unit?

Second question is about the power supply circuit. I have the 'battery' connectors to a fused 12v circuit that runs the delay box as well. Rather then mounting another switch to activate the logger I just sent 12v from the tail light circuit to the input of the 'switch' circuit. (I figured the switch circuit has 12v on one wire and the other returns that 12v when the switch is closed).
My question is if 12v is put on the switch circuit, it seems the 'battery' circuit isn't doing anything and power from the logger is being supplied purely from the switch input. I have activated the lights with the electronics switch off, and the logger operates without power available to the 'battery' circuit. Is this normal?

Thanks,
Ryan

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Ryan Taylor Racing

Ryan,

The WOT circuit on the SC1000 is designed to be used with a contact closure switch, not a powered application like you've suggested here. In order to correctly log the release of the trans brake on that circuit, you would have to use the power from the trans brake solenoid to operate some type of a relay that would open or close the circuit.

As far as the switch connection on the SC1000 harness goes, you are correct; the switch simply completes the circuit, allowing current to flow and turn the unit on. By supplying 12v to both sides of this input, you are effectively "back-feeding" the system by introducing 12v power to the harness here as well as on the fused "battery" input on the harness. Since the unit sees 12v on the switch circuit, it will power on. However, this is not the recommended method, as your 12v supply coming in on the switch input is likely not fused and could potentially damage the logger and its components.

Let me know if you have any other questions.

Sincerely,

Todd Paton
todd@racepak.com
949-709-5555 ext. 1952

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Todd Paton
todd@racepak.com
949-709-5555 ext. 1952