Installing a tach

I want to put a tach in my tachless 92 B2200... What wire do I splice it in to? I know its one of them on the dissy. I have a manual at home with wire schematics, but im at work right now and just picked up a tach for 10 bucks lol

ground to the alt if i remember correctly

is it after market ar stock tach??

Sounds like an Aftermarket one Todd... I was lucky enough with my Speedo w/ Tach, it was all plug and play, everything worked, Including the clock

Yellow wire with blue stripe on coil.

Yep. I have an aftermarket tach, $30 at Pep Boys. It's bezel is now black. I did modify its mount a little to lower it.

thanks mazdamn and yes its aftermarket. Im normally kool tachless but its a 60 dollar tach for 10 bucks....I couldnt resist lol.... Oh well. BTW its a ricer glowshift.....not the best out there but hey it was only 10 bucks right? its a 3 3/4 in. Now i just need to figure where to mount it.... Oh well, ill keep you guys updated. Laters