700r4 in a 93

[Rics71]

So I swap engine /trans and engine harness out of an 88 in my 93 .
Everything good except my speedo doesn't work . (Well on the trans side anyway) .
Appreciate any help

 

[Hipster]

I just lick my finger stick it out the window and gauge my speed by how cool it feels.

 

[Schurkey]

The '88 is wired so that the VSS signal goes to the instrument cluster FIRST. The instrument cluster processes the VSS signal, and sends it to the speedo, odometer, cruise control, ABS, and the vehicle computer.

When the instrument cluster circuitry is FUBARed, the speedo, odo, cruise, and ABS quit working, and the computer lights up the Check Engine light. Took me a long time to figure out that my instrument cluster had failed intermittently.

I don't know how the '93 is wired. Time to look at a real service manual.

 

[PlayingWithTBI]

I don't know how the '93 is wired. Time to look at a real service manual.

You have a good point, FWIU the DRAC or VSSB for the 93 is mounted under the PCM behind the glove box. If the 88 harness isn't connected to it, you won't get any signal. Just a SWAG?