TVIS power - batt or ign?

[l1ttle_d3vil]

now that ive got the 4age running nicely and consistently (i think!) im wiring everything up permanently.
my TVIS plug has 2 wires, one which goes to the ECU which activates the butterflies, and a black/yellow one which im guessing is power. should I run this to a constant 12v power source? or should it be wired up to only have power when the ignition is on (acc or something)? or does it work either way...

cheers

[kingcorolla]

ok just wire up a power feed through a 10A fuse, then to the tvis vsv via the ign switch, to run in the ON position.

then just run the other wire to the VSV 1 pin on the ecu. Its on the 10 pin plug iirc

The tvis vsv is bi-polar so it doesnt matter which wire goes where.