Rtelect

hello and HELP , I've found answers to my questions on forums without posting not this time...
I recently helped my kid purchase a 91 xj 44 front , 9" rear with Detroit and 5:13 gears . the speedometer doesn't work I cant find any wires near the 2 wire speed sensor on the transfer case I found a two wire female plug on the transmission that's to short and wrong configuration ive been unable to find anything helpful online any help would be great.
thank you

4.3L XJ

That is because it has a mechanical speedo drive, if you have the original 91 ECM. Sounds like someone got a different transfer case for it when they did the axle swap. The speedo drive are interchangeable, so you will need the drive and cable

Rtelect

Thank you , so since the speedometer doesn’t have a place for a cable that’s probably been changed also ?
everything I read was saying they went to wire in 91 so I didn’t consider it .

4.3L XJ

Check your speedo to be sure. IIRC they still had cable then

Rtelect

Does anyone have a link to a wiring diagram for a 91 xj ?
I’m having a terrible time finding something that’s exact year or same motor or....
Thanks

Red1992XJ

I believe that by 91 they were electric at the gauge. I know for a fact that 92 has an electric speedometer, and being that so much was changed for the 91 model year with the Chrysler 4.0 HO, I think 1990 was the last year for a cable driven speedometer.

Also, does the jeep currently have idiot lights, or full gauges? You may have to swap the oil pressure and temperature sending units.

BwanaBob

Have a look here:
XJ JEEPS 1984 - 2001 Jeep Cherokees

Rtelect

Still trying make the speedometer work in order to smog ,I was asked to send in some pictures of what were trying do here’s all the items Im dealing with the black female plug was sitting on top of the transmission it appears to have never been used but it’s the only extra set of wires near the transfer case . I’ve not found matching wires from wiring diagram going that direction from engine compartment, it shouldn’t be cable driven but that’s the only thing I could imagine someone removing kinda difficult to remove the wires although both for no real good reason. What am I missing?

Wrongholefool

What do the two red wires connect? it looks like the transfer case is from an older jeep than yours.

Red1992XJ

It looks like the number on that case is 231? Hard to see from the picture.

Rtelect

The red wires are the jumpers from the plug on top of the transmission to the speed sending unit that doesn’t reach nor match the sending unit but that’s all I can find although I pretty certain that’s not what it’s for.
yes NP 231 it did come stock in 91 I can’t be certain it’s from this XJ though.

dave1123

It looks like the tag says it was built in Jan of 90 (90-1). If it's been geared to 5.13, you're going to need a reduction gear anyhow. Good luck finding one!