Being a person that marches to a different drum beat, I used a regular pilot light instead of an LED. Also, since I did the BTS thing over 4K before even my factory warranty was up I never have had a temp or braking issue towing on the downhills and am not a dragstip kind of a guy so for me the manual tranny L/O was not IMHO needed. I tapped into the factory wire for ckt 480 bundle about 4 inches from where my ISSPRO tranny temp sensor is located in the NPT test port on the drivers side of the trans. I then ran the wire into the tranny temp sensor wire loom I installed and ran it into the inside of the vehicle along the parking brake cable access. This wire then goes into a small plastic box located in the area under the drivers side steering wheel area thru a .063A fuze - smallest I could find so far - and then used it to provide a ground for a Radio shack reed relay (#275-233) both of which are packaged in this plastic box. The output of this relay then goes to a switch with resistors to provide a bright and dim voltage to the pilot light located in the A-pillar pod which houses my tranny temp guage. I was concerned with protecting that circuit since it is an input/output of the PCM and wanted to protect the PCM from any overload or shorting problems with my backyard wiring. Overkill probably, but that's just me :redspotdance: I mounted my indicator light in the A-pillar gauge pod HERE . That turn signal thingee has saved me from driving downing the freeway blinking away many a time.Sorry if Im asking a dumb question and the gains or purpose out of this ? where are pictures, would this be better for the trans ?