Wiring the 100-way connector.

If you have the wiring harness for the overhead console, then you need to check whether it really is the correct wiring harness before you plug it in. The wiring gets a little more complicated as I found out with my 95ZJ which had electrical components from a 93ZJ service manual. Under the passenger kick panel there are 2 versions of the '100-way connector'. This is what the '100-way' connector cluster looks like:

There is a wiring harness with a green and red connector. This is from a 94-95 ZJ, however make sure to check as my 95 ZJ didn't have this layout. Then there is the earlier version that has a black and red connector for the 100-way connector which can be found in the 93 ZJ service manual. The easiest way to check is to look at the black and green connector. If you have a green plug with 1 wire, then you need the 94-95 harness with the green and red plug. If you have a black plug near the top of the cluster with 1 wire, then you need the 93 harness with the black and red plug. Please note that the year using to refer to the harness types doesn't necessarily mean that you have to get it from a jeep from that year, it's just that they reflect the service manual from those years.

Here is an example:

This is a black plug with only 1 wire, which means that this person needs a 93 wiring harness. This is what my 95 ZJ had.

Here are the important connectors from the 94-95 ZJ for the 100-way connector cluster, **PLEASE NOTE** just because it is from the 95 ZJ service manual DOES NOT mean it will be in your 94-95 ZJ. My 95 ZJ did not have this layout.

and the second:

Now here are the 'same' connectors on the 93 ZJ (please note connector G is black and H is red):

Now if you have the overhead console OEM wiring harness you can go ahead and plug it in if you have the right connector that replaces the one with 1 wire in it. Be sure to connect the single wire that was in the 'blank' old harness to the new connector. I believe it's VT/YL (violet striped yellow) for circuit G71 which is the VTA lift gate key cylinder connection. However, if the connector does not match the blank (1 wire) one in your 100-way connector, then you have to go to a junkyard and get a connector (black or green) that can fit in the correct slot with all the wires in it so you can use it to wire all the needed connections. Just cut off the old connector if needed and solder on the new one. At this point, you should be done with most of the wiring if you already have the wiring harness with the original or new connector that match your vehicle. So if you have the correct wiring harness now you can now just skip to the wiring of the ambient temperature sensor.

If you are making your own wiring harness, you do not have to get the red plug if you already have the keyless entry option, you can instead tap these wires of off the wiring harness of the keyless entry module. If you do not have the keyless entry dome then you have to get the red plug as well so you can have the wire the keyless entry module in the overhead console.

Now here are the pin outs for connectors of the overhead console and keyless entry module. This is the same in every 93-95 as far as I know.

Now just wire it correctly between the connectors and plug it in. As for the length of the wires it's never a bad idea to have the wires a little too long and trimming it later to the right length.

If you are making your own wiring harness and you already have the keyless entry module present and you do not want to also wire the red connector as it's already wired up to the above the headliner anyway, then do the following (worked for me):

The only connections that the overhead console does not get from the black/green connector in the 100-way connector (depending on your year) is pin 6-8 on the overhead console connector pinout. These connections in the factory wiring harness are in fact spliced from the red connector before it reaches the overhead console and keyless entry module. In other words you can simply connect to the wires that go to the pins 6 (red striped white), 8 (yellow striped dark green), and 12 (yellow) on the keyless entry module.