I am putting a pioneer avic d3 navi unit in the car and was wondering if anyone knew where i could pick up a speedo pulse and also where to pick up the reverse signal at?? There should be a speedo imput up by the cluster and i am guessing that there is a reverse light wire somewhere around the transmissoin?? Thinking that someone has done this here before??

Thank you for all your help guys!

 

I didn't hook up the speedo wire. I'm relying on the GPS alone to handle the speed calculation. However you can pick up the speedo signal at Connector X-14.

"Connector X-14...located under the dash on the passenger footwell area, it's the white connector up behind the RX-7's blower motor near where the emissions harness passes thru the firewall.

...orange (manual cars) or blue (automatic cars)...this wire went to the ground side of the RX-7's VSS sending unit, which was located in the driver's side of the RX-7 transmission's tailhousing. If you are tracing the dash harness half of this X-14 connector, these wires change to yellow w/ white stripe.

.black wire w/ red stripe (manual cars) or yellow w/ blue stripe (automatic cars)... comes from 15a fuse in underdash fusebox. This is the power source for the back-up lites. If you are tracing the dash harness half of this connector, these wires change to black w/ yellow stripe."

(Credit to http://www.grannysspeedshop.com/ for that information)

 

Why would you want to do this? I like that the GPS does the speedo calculations.

 

The Avic manual states that navigation will be more accurate if you use both sources.

 

Wow thanks so much for the information!! Should be up and running in no time!