Wanting to get an aftermarket speedo with V8, 4l60e, and Toyota TC

[MScruiser]

I have a 1968 FJ40 with a 2008 5.3 Vortec with a 4l60e tranny mated to a stock Toyota transfer case with an Advanced Adapter.

My toyota speedo is shot, and since I am already running Autometer gauges (volts, battery, oil, and fuel), I figured I might as well upgrade to an Autometer tach and speedo.

Since I am going from a mechanical speedo, to a digital, I (from my research) will need to get the input signal from the Chevy VSS (vehicle speed sensor).

I have very little info from the PO, about the conversion, so I am a little lost. Where would that sensor be? What wire should I be looking for?

I apologize for my ignorance.

 

[spotcruiser]

I'm not too familiar with the 5.3 and 4L60E, since I have a 5.7 and NV4500, but I believe your speed sensor is in the side of the transmission. The tach output signal wire should be listed on the 5.3 wiring diagrams on LT1SWAP.com. I'll see if I can find the wire for you.

http://www.lt1swap.com/geniv_harness.htm

VSS wiring is shown here: http://www.lt1swap.com/pictures/4L60E PNP Signals, VSS Signal and Tow-Haul Signal.gif

Great info here. Look at page 16. http://www.painlessperformance.com/Manuals/60219.pdf

 

[dbleon]

The vss should be on the drivers side of the AA adapter unit.

 

[chicago]

Yeup...^^^^
It's on the AA tail housing adapter. Need the reloctor ring too.
Not 100% sure as its been a while, but doesn't that need to be tied into the ECU and harness for it to run properly??
How did the PO get around that?

 

[Gumby]

You don't NEED VSS, but it will run better with some signal to at least tell the PCM the vehicle is moving.
I plan to use the marlin vss that screws into the transfer case where the speedo cable went. I'm hoping the PCM will be happy with a 12v square wave rather than the 1-120v sine wave it's expecting.

It's very easy to get a speedo to read the 12v square wave, or I'll get a GPS speedo.

 

[warpdriv]

The VSS should already be hooked up since the computer needs it. There should be wire coming of the computer for your speedo.