Rpm my car whit out rpm organal gage on it.i dont now how to fix the wiring for it.

what engine,?
no year.
what country.?
what car, we dont have that car here in uSA>
this is USA forum, (calif to be exact)

The RPM gauge uses, spark trigger.
on EFI this can be easy to insane hard to do.
suzuki makes 56 engines, world wide.

fitting a tach to all book would be largest book in earth.

see?

on the G16 engine, we have a tacho already with a brown wire
if you connnect aftermarket tach to same wire,
it either works or stalls engine. (ask why)

sounds like might b a main fuse. do u have a kick panel and a box under the hood? sometimes a main relay or fuse will cause many electric things to go out.

use a scanner to reset the CPU as the program is corrupted from the flat battery

I got the same problem. u ever figure it out? ive cleared codes and there the same. light on cluster lit up . plus some time after pulln away from stop car goes five mph. turn off start up drives fine. im about to burn this thing.

car running good leave alone.

Sounds like you may have a problem with the circuit board on the backside of the instrument cluster.

the rpm gage dont go the the trans its hooks up the the motor so your trans dont have anything to do with the rpms

I have 19897 Grad Prix that the RPM gage wont work, only some time, i perchesed a manul for the car but is dont tell me squat about RPM gage

The problem is electrical. Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.

Have the computer checked