Once again about the tidy - Toyota Celica, 1.8 liter, 2003

Many people ask me how I did the tidy, how much money it turned out, etc.
I decided to reveal the main secret - the transfer of arrows.
Although, I think that whoever wants ... he will achieve it himself, it is not difficult to find these schemes.
Nevertheless, everything except the chip soldering schemes can be found here:
www.drive2.ru/cars/toyota..rnal/4035225266124044918/

And now in more detail, about the most difficult. If you are not sure, then look at exist.ru for the cost of a new tidy.

Actually, what do we need to do to flip the arrows and so that everything shines just as beautifully

Let's sort it out!
I will not write how to disassemble the device. If you can't make it out, then don't read on.

All photos were taken from Sean (ledmod.com) We take out the tidy
, unscrew all the bolts, remove the arrow and the backing, take out the microcircuit.
The main soldering will be done here:

I am not a physicist, but so much the better for you, I will explain in everyday language.
The arrows rotate due to the voltage on the 4 pieces of iron.

And actually all we need is for the voltage for the speedometer to be supplied to the tachometer, and the voltage of the tachometer to the speedometer!
All ingenious is simple :)

These glands, I don’t know what they are called ... consist of 4 legs, and a lid above them. The legs are inserted into the microcircuit and from below are all connected by wiring. On the microcircuit, voltage is applied to one of the knife, and then it is carried to all legs through the microcircuit and through the cap of this piece of iron.
First, we cut the contacts on the microcircuit, as shown in the diagram.

We must try very hard not to damage the rest of the pins on the board!

That won't do!

Nice mode

I remind you that all drawings are taken from ledmod.com! guru tidy in the USA :)

Further, it is necessary that the voltage on the piece of iron from this leg is also not transmitted through the top. How to do it? easy! We cut the leg!

What legs to cut? Those around which contacts were cut

In general, it is necessary to bend them away from the microcircuit, so as not to contact

Well, now we transfer voltage from the isolated knife to another piece of iron. We connect everything according to the diagram with wires:

You get the following noodles:

How did I agree to do this? I don't understand myself. I was holding a soldering iron in my hands ... 5th time in my life.

Actually, now you can collect the tidy and test.
The author of this blog does not bear any responsibility for your devices and cars in general :)

I advise you to put arrows on the side. computer. Otherwise, inaccuracy in the readings is possible.
Alternatively, there is another way: