Installing Tach on 92 Crown Vic

I checked the wiring diagrams in my manual but I have no idea where to start.
Any help is appreciated
Thanks Pat

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Usually aftermarket jobs hook onto the ignition coil.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.