I need instructions on how to install a tacho in a 2002 cg lancer

Question edited for a lot more clarity and correct spelling.

You spelled it 'Techno meter', so that means all your search results with be flawed.

This says you can get a Can Bus interface module.

https://www.google.com/search?q=2005+mitsubishi+lancer+tachometer+pulse+signal

and here is you non Evo ECU Pinout for a 2003, yours will be the same. Pins 58/43 is Tacho

https://www.evolutionm.net/forums/lancer-troubleshooting/572498-ecu-pinout-03-lancer-non-evo.html

Interesting workaround with a Transistor and a couple or resistors

https://www.the12volt.com/installbay/forum_posts.asp?tid=97121

....

8' DTDC

Remove the speedometer head unit, and check the soldered joints on the back. It's a common problem with these and some Chrysler products. "Randomly" is when the crack closes and makes contact, like if you hit the top of the dash and it starts working again. The speedometer head cluster.

change cluster contacts bad

Here is a link that should help you get the wiring colors you asked for. Good luck and hope this helps. http://www.installdr.com/Harnesses/Mitsubishi-Wiring.pdf

eBay has these manuals available. Item # 270544305731
Sells for 6.99 to 7.99 + .99 for shipping.

This is the repair manual and is a CD for use with a PC.

They have owners manuals for some models too.

good luck

probably burnt or cracked circuit board on back of gauge cluster

here you go, hope this helps
http://www.autozone.com/addVehicleId,2752101/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c152801d5dfb

so u have a CH/CG lancer

you would need to remove the two 10mm bolts from the coil packs and leads and then stick the smaller version of spark plug socket in remove them, bear in mind if u have a mivec motor the spark plugs MUST be Platinum :)

i had the same problem on my g/f's 2000 lancer GLXi, (with tacho),
i fixed the problem by putting a jump wire on the back of the instrument cluster,
the fault was in the wiring to the tacho part & i drew up my own wiring diagrams for the cluster unit,
then traced the fault,
looking @ the back of the cluster unit, the top right hand screw for the speedometer,,, follow the track on the circuit-board, there is a link wire UNDER the board (there is a dotted line on top where it goes, i think its the left 1,,, there is 2) this track then goes to the bottom left screw on the tacho,,,
i soldered a small gauge wire from the bottom of the link solder joint (MAKE SURE ITS THE CORRECT LINK, THERE IS 2 SIDE BY SIDE) to the bottom right track on the vertical plug socket (its common pos for the warning lights) this is where the "MIRAGE" & other "CE LANCER" (without tacho) gets its speedometer & gauges power from,

kind regards waz
if anyone needs a photo i will pull out the dash again lol its only 6 screws