View Full Version : Engine RPM

elmer phudd
July 19th, 2012, 12:49 PM
Thanks 4 cecking out question, but I found the info I needed.

What can I attatch a 1 wire lead for RPM reading like a Tach under the hood or dash? 2004 TJ/LJ 4Ltr. I know the plugs fire twice every revolution once power second exhaust. But I need the actual RPM of engine. Help Please.
Elmer Phudd

July 21st, 2012, 08:51 PM
Well which wire is it?