Roman,
removing the speedo is a pain in the rear. be prepared to spend some time and some scrapes.
like cees said, start with the tach, reach up behind the dash, unscrew the tach cable, then there is a nut that holds a bracket that secures the tach. the will probably be a ground cable on under neath the nut.
remove the tach, then sitting in the drivers seat reach in the tach hole and remove the nut holding the center instrument cluster and the electrical plug. note: there is a line to the oil pressure guage and a line to the temp guage, carefully push the cluster to out of the dash a few inches. do not push too hard as you can damage the oil and capillary line.
then, reach around and unscrew the speedo cable, nut that holds the bracket, and there may also be a ground wire beneath this nut as well.
when re assembling, be carefule not to short out the light bulbs on the brackets that secure the tach and speedo. I eneded up taking some electrical tape and "insulating" the bracket from the areas where the light bullbs could contact the metal.
ALSO, take some tape, and wrap a little around each of the securing nuts so that each has a small tail of tape. that way if you drop the nut, and you will, you can grab it.
I have dropped the nuts before and ended up taking all the guages out to find the nut had fallen behind the dash underneath the ignition switch. This tip will end up saving you a lot of time if you drop a nut.
take your time, and have patience, I hate removing the guages, but after a few times it is not that bad.
be sure to do any other projects behind the dash once you have the guages out, trust me and others, you only want to remove the guages once if you can.
Hi Cees!!
Matt