Electronic Speedometer / Tachometer swap

[juras]

Hello,
Trying to swap original tachometer because I buy LTD 454 1986 after chrash without them and wire harness was chop off. Tachometer have +, -, and engine speed signal line. Where can I find that engine speed signal line? It is only thing thats holds my down. PLEASE HELP ME !

[eaglerider]

The speedometer ans tachometer are cable operated, not electronic.

[juras]

I know, but I want to swap from cable ones to electric. I should be able in 21 century  

[lemongarage]

I'm not sure how to get a digital tachometer on the bike, but as far as a digital speedometer goes, I would look into TrailTech. Lots of my dirt bike riding friends use these on their bikes when they want to ride them on the streets. It has some kind of magnetic sensor that goes to your front wheel, and after a short learning period it picks up on the speed you are going. Never used one myself, but they won't run anything else on their bikes.