speedometer signal help

Reply Subscribe

Thread Tools

Search this Thread

Dec 6, 2009 | 11:34 AM

Thread Starter

TECH Junkie

iTrader: (10)

Joined: Feb 2003

Posts: 3,051

Likes: 1

From: pensacola fl

speedometer signal help

97 model lt1 v8 instrument cluster.
what signal does the speedo need to see?
i know its a 4000ppm rating (4 pulse)
is it a sine wave or a square wave signal comming from the ECM?

Dec 7, 2009 | 11:32 AM

psiconversion

LS1Tech Sponsor

iTrader: (5)

Joined: Feb 2007

Posts: 1,310

Likes: 11

From: Brick, NJ

I believe it is a square wave coming from the PCM.

__________________

Your Source for LSX Conversion Parts!
www.psiconversion.com

Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'

Reply Subscribe