Well folks, here's the TPMS bypass some of you have asked about. Hopefully this will help. Sorry if the images are not the best, I took them at full resolution, reduced and moved them from Canon Zoombrowser to My Documents ( where they are about 70K each), then uploaded them to Car Domain so they can be picked up here.
I'm no computer expert, but here we go...
Undo bottom of glove box shock from glove box by pinching the post, pull in sides of glove box to get stops past the surrounding dash plastic, then lower glove box more and POP the glove box off its hinge points.
Remove the shock temporarily to get it out of your way.
This picture is of the harness change with the TPMS light in the always off possition.
Here I'm holding the wire that is the output of the TPMS computer, I have put a male crimp here. This wire puts out a ground of just a few ohms when it wants the light out.
Here is the ground lead I've put in, a simple fuse link with a loop connector for the ground lug, and a male connector for the TPMS light connection.
Here you see the female connector attatched to the light lead (About an inch out of the harness), plugged into the TPMS computer lead. This is the factory configuration for the light to function according to the TPMS output.
This is just a pull away shot to give you a better overall view of the area. The wiring is here configured for the light to be off.
This is a close up shot to show you the way the harness should look and the correct wire to cut into. Again, I've cut the wire about an inch out of the harness plug.
Here is the best place to ground the fuse link wire. In case your wondering, I've used a three amp fuse, you can probably get away with much less if you use a glass fuse holder. I've fused the connection for an added safety level. The light gets its power from the instrument cluster, if there were a problem with the light, how much current would go thru it before the cluster fuse blows? I don't care to find out. Better safe than sorry.
Zip tie the harness back in place when you're done, it makes it neater.
This is a picture of a crimping tool and the types of crimps you'll need for the job.
BIG NOTE: I WANT TO STRESS THAT THE TPMS LIGHT WILL BE DISABLED!!! THE TPMS COMPUTER MAY BE COMPLAINING ALL IT WANTS, BUT YOU'LL NOT KNOW ABOUT IT, UNLESS YOU RECONFIGURE THE LEADS TO THE FACTORY SET-UP. IF YOU DON'T PAY ATTENTION TO YOU'RE TIRE PRESSURE ON A REGULAR BASIS, DON'T DO THIS MOD! THE AUTHOR TAKES NO LIABILITY OR RESPONSIBILITY FOR ANY PROBLEMS OR SITUATIONS ARRISING FROM FOLLOWING WHAT I DID TO MY TRUCK.
I can say that I've had no trouble with my truck from doing this mod. When I change the configuration back to factory, it works just fine. The TPMS computer does not seem to communicate to the ECU or anything else for that matter. This mod is now several months in my truck without any issue. BUT I CHECK MY TIRE PRESSURE WITH A QUALITY GUAGE REGULARLY!!! Remember, Uncle Sam thinks you're an incompetent imbicile and he wants you to be safe from yourself more than anything else.
Good luck in all your endevours, Richard.
P.S. Sorry for any grammatical or spelling errors.
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