Possible to connect Gen1 Explorers to Android gauge apps that usually use OBD2?

[colintrax]

I had a thought earlier; if I convert the speedo cable to digital then it would actually be simple enough to add a small electric motor onto the old odometer as long as the speed of rotation was calculated correctly.

You could. I think 95+ explorers have an electric speedo. My 97 is electric.

Might be able to swap the needed parts from a 2nd gen to your 1st gen. Not sure if they backs will swap though. I know what the back of a 1st gen cluster looks like, but it's been awhile since I've removed the cluster from my 2nd gen.

 

[scoodidabop]

So, what does IGN mean on this cluster? SIG and GND are pretty obvious and I'm assuming that any pulse width signal goes to the SIG pin right? Here's my cluster:

http://i.imgur.com/SYF8vy6.jpg

Is there any pinout and resistor value charts here on the forum? I've tried searches with no luck.

EDIT: One more question about something I'm seeing on the cluster; what does the '8CYL' trace do? Also, I'm considering keeping my current cluster but getting rid of the tach so would that harm anything if I did that?