Wheres the ignition? - Toyota Nation Forum : Toyota Car and Truck Forums

Mickyblue · 06-30-2008, 08:47 PM

I need to hook something electrical up to my ignition from my engine bay so that it will only run when the key is turned over... how do i do this? if its in the passenger compartment, how do i get wires through the firewall? i cant figure it out, help me!

Mickyblue · 06-30-2008, 09:15 PM

ok, wheres the Ignition Switch Harness ? or should i just get a manual switch and run my generator? If so thats fine, how do i get wires into my passenger compartment? i find a rubber button on my firewall, but theres foam and hard rubber on the other side, and i dont know where it goes! whats the easiest?

Luckynumber5 · 06-30-2008, 10:05 PM

Well there are wires in the dash harness you COULD use, but I would hope your HHO generator would pull enough current to blow the fuses (otherwise that means it's not producing much hydrogen

)

I would hook an automotive grade 40 amp relay (look on ebay, they are cheap) to one of the positive injector leads and the other directly to the battery so then when the ecu has power, the HHO generator also has power. You won't blow any fuses this way either since the relay doesn't pull enough to make any difference in the injector's operation and the other leads are connecting the generator to the battery.

Don;t just hook it directly into an existing system, you are asking for trouble. Make the generator it's own circuit with a relay. If you don;t know how just let me know and I can help you.

guate6 · 06-30-2008, 10:09 PM

Quote:

Originally Posted by Mickyblue

I need to hook something electrical up to my ignition from my engine bay so that it will only run when the key is turned over... how do i do this? if its in the passenger compartment, how do i get wires through the firewall? i cant figure it out, help me!

I had to do this when I installed my radio-frequency alarm system. Just unhook the wire harness from the ignition, there should be white, red, black and another white. Get a power tester. I think red is hot, white is what you'll be hooking it up to, and black is when the engine is completely on. Current testers with an LED are pretty cheap at walmart. Then get a splicer and bingo, you're set.

Always put fuses with anything you'll do electrically.