sweetC5
06-15-2012, 02:04 PM
Hey guys, I assume the ls1 cars need a tach adapter like my 5th gen does. What are you guys using, are there any cheap ones out there? MSD sells one but its 90 bucks!
Stereo & Electronics - Tach adapter for aftermarket tach?
View Full Version : Tach adapter for aftermarket tach?
wayneg1035
06-15-2012, 04:45 PM
I made one for my lt1 that cost about $2.00 in parts. It converts the 5V square wave tach signal to 12V. Its like 2 or 3 resistors and a transistor. Let me know I'll check out what components I used.
http://wayneg.smugmug.com/Other/Camaro/i-LsWzcCk/0/L/photo-L.jpg (http://wayneg.smugmug.com/Other/Camaro/9438600_K59Md2#!i=1281557898&k=LsWzcCk&lb=1&s=A)
The yellow lines on the oscilloscope are the 5V signals and the Blue lines are an inverted 12V signal.
http://wayneg.smugmug.com/Other/Camaro/i-LsWzcCk/0/L/photo-L.jpg (http://wayneg.smugmug.com/Other/Camaro/9438600_K59Md2#!i=1281557898&k=LsWzcCk&lb=1&s=A)
The yellow lines on the oscilloscope are the 5V signals and the Blue lines are an inverted 12V signal.