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Q: No crank no start from ignition

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When i try to start my suv there is no crank but only some of the dash lights come on then go off. There is a black thin wire that comes from the wiring horness to the back of the block i discont that wire and all my dash light come back on. But still no crank no start from ignition. However it will crank from the starter relay but no start

My car has 200000 miles.
My car has an automatic transmission.

Be sure any engine immobilizer system (security system) is not activated, thus preventing the car from starting. Broadly, either the starter motor/solenoid assembly is faulty or the electrical circuit supplying the motor has a fault. That circuit begins at the battery and includes grounds, wiring (some of which is very heavy cabling), fuses, relays, the ignition switch and terminations. Basically, with the key held in the "start" position, the starter is either getting power or it isn’t. With the key in the "start" position, if the starter motor is getting power but it doesn’t work, the starter is condemned and replaced. On the other hand, with the key in the "start" position, if there is no power to the starter, then the circuit is traced until the fault in the circuit is found. In addition to a faulty ignition switch, faults can include high resistances, due to corrosion, wire strand breaks, or loose terminals, which can only be diagnosed using a voltage drop test. If you desire that a certified mechanic resolve this, please simply request a no start diagnostic and the responding certified mechanic will get the problem diagnosed and repaired for you. Please let us know if you have further concerns or questions as we are always here to help you.

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