Help! I am trying to find a tachometer wire on a 2005 toyota tundra double cab. The information I have says it is a black wire in the ECM which is behind the glove box. I can not find it. Anyone got better info?

When you say tachometer, do you mean the vehicle speed sense wire (vss), If so here's the vss info:

Speed Sense = GREEN/ORANGE (AC) 35 PIN CONNECTOR AT THE ECM PIN 17 (8 CYL)

ON A 6 CYL THIS WIRE CAN BE FOUND IN A 22 PIN CONNECTOR AT THE ECM PIN 6

Just in case you do mean tach wire:

Tachometer = (AC) AT IGNITION COIL, CAN ALSO BE FOUND AS A BLUE/WHITE 31 PIN CONNECTOR AT THE ECM PIN 5 (8 CYL.) BLACK/BLUE AT THE COIL ON A 6 CYL