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2SSRS@Gen5diy · 07-07-2010, 08:29 PM

Some info i got today on this.

" The head up display displays the vehicle speed based on the information from the ECM.
The ECM sends the vehicle speed info via a high Speed-Bus signal to the instrument cluster.
The instrument cluster then sends the vehicle Speed info via a low speed can-Bus signal to the head up display in order to display the vehicle speed."

Any way ordered the switch its one part and the wiring harness today was less then $60will get back soon..

07-07-2010, 08:29 PM	#53
2SSRS@Gen5diy Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008 Location: By the lake in AZ Posts: 15,728 View My Garage	Some info i got today on this. " The head up display displays the vehicle speed based on the information from the ECM. The ECM sends the vehicle speed info via a high Speed-Bus signal to the instrument cluster. The instrument cluster then sends the vehicle Speed info via a low speed can-Bus signal to the head up display in order to display the vehicle speed." Any way ordered the switch its one part and the wiring harness today was less then $60will get back soon.. Last edited by 2SSRS@Gen5diy; 07-07-2010 at 10:49 PM.