Doing a swap in my 92 sc300 when I go to start it when the switch is in on pos it start s to turn over then when it is in start pos it starts then let go of the key it cuts off and still will be turning over someone help

 

Get a multi meter.

Check all your wiring.

Make sure the starter solenoid isn't stuck.

 

Who did your wiring?

 

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What wires these 2 go to they was not connected to anything

 

The orange with black tracer, and the solid white wires that are not loomed up are your Theft Horn wires. All they do is go through the engine harness and come out near the underhood fuse box where your actual theft horn is located. They do not go to the ECU, or any other destination, atleast....they shouldn't be!

 

What ecu wires would cause this if they was wrong or what would cause this to happen