T-case Sensors not Compatible...
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Originally Posted by SeniorXJ
Correct, so like i was saying, since the 231 has no full or part time, (4hi 4low), how are they gonna light up the dash? Thats why im sayin does it even matter to plug it in...
Thread Starter
Senior Member
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Well my last XJ was a 95 & had no digital alumination on the dash & as for my 98, ive only drove it once, home from NJ to here & emidiately tore it apart for my build so i would have no idea. Say like i keep askin, whether or not this lights up anything on the dash, wouldnt leaving it unplugged be no harm no foul??
Thread Starter
Senior Member
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
The 242 switch and connector both have 4 pins. The 242 connector will only have, and use, 3 wires. You will be using 2 of those wires for your 231. See below.
You will need to use the small (231) switch and change the connector to fit it. When you get a 2 pin connector you can splice it in to the 242 switch wiring.
You will be using the 242 body harness Black/Red tracer wire to go to pin A of the 231 connector and the Black wire to pin B of the 231 connector.
Pin A is power from the "Part Time" lamp in the Instrument Cluster, and pin B is ground (G101).
The Black/White tracer wire from the 242 circuit is still hot. Crimp a dead end cap on it.
Disconnect the battery negative post while working on this.
You will need to use the small (231) switch and change the connector to fit it. When you get a 2 pin connector you can splice it in to the 242 switch wiring.
You will be using the 242 body harness Black/Red tracer wire to go to pin A of the 231 connector and the Black wire to pin B of the 231 connector.
Pin A is power from the "Part Time" lamp in the Instrument Cluster, and pin B is ground (G101).
The Black/White tracer wire from the 242 circuit is still hot. Crimp a dead end cap on it.
Disconnect the battery negative post while working on this.
So I followed these steps exactly & my reverse lights are still NOT lighting up, plus there is NO dashboard light that lights up when I put it in 3wd hi or low!!
So whats my next move here as I thought that t-case plug would fix my reverse lights, oh & yes the bulbs DO work as they will go on if I wiggle the shifter a bit but of course would like them to work properly?!?!
Thread Starter
Senior Member
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
The 242 switch and connector both have 4 pins. The 242 connector will only have, and use, 3 wires. You will be using 2 of those wires for your 231. See below.
You will need to use the small (231) switch and change the connector to fit it. When you get a 2 pin connector you can splice it in to the 242 switch wiring.
You will be using the 242 body harness Black/Red tracer wire to go to pin A of the 231 connector and the Black wire to pin B of the 231 connector.
Pin A is power from the "Part Time" lamp in the Instrument Cluster, and pin B is ground (G101).
The Black/White tracer wire from the 242 circuit is still hot. Crimp a dead end cap on it.
Disconnect the battery negative post while working on this.
You will need to use the small (231) switch and change the connector to fit it. When you get a 2 pin connector you can splice it in to the 242 switch wiring.
You will be using the 242 body harness Black/Red tracer wire to go to pin A of the 231 connector and the Black wire to pin B of the 231 connector.
Pin A is power from the "Part Time" lamp in the Instrument Cluster, and pin B is ground (G101).
The Black/White tracer wire from the 242 circuit is still hot. Crimp a dead end cap on it.
Disconnect the battery negative post while working on this.
I'll try this again, I wired in the t-case plug just as u described here & nada.
So what exactly is supposed to light up with this plug??
Thanks
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Reverse lights run off transmission not transfer case . Have you jumped the plug to see if theres even a light on dash that lights up ? Ground the Black with Red see if dash light works.
Last edited by freegdr; Sep 2, 2013 at 04:45 AM.
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
**UPDATE**
So I followed these steps exactly & my reverse lights are still NOT lighting up, plus there is NO dashboard light that lights up when I put it in 3wd hi or low!!
So whats my next move here as I thought that t-case plug would fix my reverse lights, oh & yes the bulbs DO work as they will go on if I wiggle the shifter a bit but of course would like them to work properly?!?!
So I followed these steps exactly & my reverse lights are still NOT lighting up, plus there is NO dashboard light that lights up when I put it in 3wd hi or low!!
So whats my next move here as I thought that t-case plug would fix my reverse lights, oh & yes the bulbs DO work as they will go on if I wiggle the shifter a bit but of course would like them to work properly?!?!
Thread Starter
Senior Member
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Fixing the switch is easy. Getting it off of a NY Jeep is the bear.
Thread Starter
Senior Member
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
LOL!! You must be talking about our 4 seasons of weather we get every year.
Guess i'm more worried about breaking it upon removal, (or at any time), cause these things are expensive, even the junk yards prices are over a hundred bucks!!
Guess i'm more worried about breaking it upon removal, (or at any time), cause these things are expensive, even the junk yards prices are over a hundred bucks!!
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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