LS7 Speed sensor wiring
11-26-2010, 02:02 PM
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LS7 Speed sensor wiring Guys,
I've got an LS7 crate motor in a kit car (Ultima GTR) and am having trouble getting the Speed Sensor to operate properly. This LS7 engine harness is an aftermarket piece modeled after a GM unit and has two wires that feed the sensor, a yellow wire which I was told should be @ 12VDC, and the purple wire which should be the trigger wire for the ECU. The two wires both read 2.5VDC when ground is referenced @ the chassis. Anyone have any thoughts as to what might be wrong?
Thanks for your help, Chris
I've got an LS7 crate motor in a kit car (Ultima GTR) and am having trouble getting the Speed Sensor to operate properly. This LS7 engine harness is an aftermarket piece modeled after a GM unit and has two wires that feed the sensor, a yellow wire which I was told should be @ 12VDC, and the purple wire which should be the trigger wire for the ECU. The two wires both read 2.5VDC when ground is referenced @ the chassis. Anyone have any thoughts as to what might be wrong?
Thanks for your help, Chris
