Question about Toro Titan ZX4800 23HP Zero Turning Radius Lawn Mower 74830

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I hooked the battery up backwards (now its right) but when I go to start it the fuse blows.

I need to know the problem i have caused and how to fix.

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Improper ground on shorted wire. Check all wires.

Posted on May 24, 2014


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1 Answer

I hooked the battery cables up backwards and it blew the magneto hooked the cables back the right way and it blew the magneto again the model#21R707-0011 10.5hp 344c

This doesn't sound like a car, but more like a riding mower or something.

Anyway, is it the magneto that "blew" or a fuse for the magneto? You don't mention that you replaced the magneto....

Some manufacturers incorporate reverse protection diodes that are supposed to cause a fuse to blow if the battery is hooked up backward. Unfortunately, the diode often becomes a short circuit when this happens and would explain why a primary fuse would blow again, even when the battery is hooked up correctly. If you have a wiring diagram for what you're working on, I'd suggest checking for a diode connected near the battery cables. If you don't have a wiring diagram for this, you're probably going to need one.

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Hooked battery up the worng way

Hooking up the battery backwards causes a surge that blows the engine main fuse.The main fuse is usually found in the engine bay's fuse box.
If your lucky you blow many fuses. But alot of the times every electrical component will puff magic smoke and will need replacing. Especially the Computer, Radio and Body Control Module.

Now What to do.Click the link below for step by step troubleshooting:
This will help.

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What happens when you hook a care battery up backwards?

Hello Glen, Bad bad things can happen when you hook up a car battery backwards. If your car has a high quality electrical system it might only blow out one or two main fuses. If not, it can cause havoc on the wiring system and burn out the alternator, computer, sensors, modules, and stereo system to name a few.

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1998 Acura tl 3.2 no start no noise

First check your battery condition and state of charge, next check your battery cables for cleanliness and tightness. Did this happen after jump starting the vehicle? If so the jumper cables may have been hooked up backwards causing the main fuse to blow in the underhood fuse box. Check that next. Then you need to check for a start signal at the starter which is best accessed from the drivers side under the vehicle.

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I accidentally hooked my battery up to my bike backwards and put a jump starter up to it backwards as well. When I started to smell the battery I realized my mistake. I hooked it up correctly and it...

May have a blown main fuse or several fuses. The larger main fuse can be located around the battery and even sometimes in the fuse panel. Hooking up the jumpers backward may have also cause electronic damage to things like the ecm, ignition modul etc. If the damage is electronic is may be major so carry it to a shop and let the shop look at it.

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1 Answer

2008 Sienna will start and run but nothing else works following a very brief attempt to hook up the battery backwards.

when a battery is installed backwards for any amount of time it blows fuses mainly the large ones in the under hood fuse box

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Not sure how to hook up plow motor to battery? Its an old fisher speedcast plow with cable controls thats electic over hydralic.It has pos and neg. cables and a solenoid on the pos. cable. I assume you...

The heavy + should be connected to the battery through the solenoid for the motor. There should be wires to control the solenoid (an electric switch, you know). The - goes to the truck's frame at a place of your choice. The ground must be solid, you know that, right?

I think if I were doing this install, I would hook the plow ground with the battery ground on the fame or where ever it is located.

The plow control should be mounted for your convenience inside the cab.

Lets review: Plow motor | ground to ground, hot to solenoid (motor side) | solenoid (battery side) to battery | solenoid control wires to cab.

Thanks for your question at

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1 Answer

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any time a battery is hooked up backwards anything that contains diodes will have to be replaced.unplug the radio and see if you can put the fuse in without it blowing.when you get the vehicle going have the alternator tested,it also has diode in it.good luck.

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Fuse MAIN - protects the following circuits:
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1 Answer

Car will not start

check all the fuses inside and outside of car.when you hook up battery backwards it will blow more then one fuse.

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