Grid Heater hookup?

[twofazed]

Hey all, curious about the intake grid heater. How does it work pertaining to hooking it up. What runs it, turns it on and off. Is it straight 12volts? Does it run 24/7 while engine running? I am doing a swap but have no computer or wiring harness to speak of. If it is simply straight power for Cold starting, maybe a timer switch on the dash? Thanks

[torqmonster]

It is just for cold starting. I have one rigged up a bus with a switch, you just hold it for a few seconds to heat it up, then start.

[twofazed]

So 12v to the grid, through an intermittent push switch on the dash is all I need?

[GAmes]

In a '97 stock setup the relays receive constant power. The PCM supplies a ground timed according to outside temps. The grids draw a lot of amperage and require relays in the circuit. I bypassed my PCM and have the ground going thru a toggle switch. I can heat the grids as long as I want prior to starting, or not at all if I wish. I also do not have to put up with the grids activating after the engine has started.

[93wuntun]

the grid(s) pull buku amps, you'll need (at least) intermittent type solenoid(s) to handle the amps.

[torqmonster]

Right now for the bus, I have 2 battery cables going to it with a big cut off switch. For a truck yeah, you will need a solenoid.

[GAmes]

Not solenoids, relays. Two entirely different things.

[Jagger]

Heres a bunch of info answering all your questions.

Grid Heaters