fog lights switch wirring question

[Jimbeau]

I am installing a set of aftermarket fog lights on my 2005 taco. I would like to pick up my power from the fuse block behind the dash instead of from the battery as suggested by the pilot wirring diagram. Does anyone know how to access/wire to one of these fused points without removing the fuse block, or should I just wire to the battery. I would like to use a voltage source that is switched off with the ignition, but I don't want to start pulling things apart on this new truck. Any suggestions would be appreciated. Jim

[ctesla]

Jim,
someone has posted (at the top of this forum) an '03 Service Manual.
relay box should be very similar. just dremel or drill 1/8" hole in one bottom corner of the fuse relay box (you can silicone closed after you've run your wire). jump your hot wire through something like the hot side of the horn relay, or an unused terminal (if one is available).
this way, either the relay/fuse with the light kit, or at worse case, the horn relay blows, but all other electronics stay working.
taking power directly from the battery is the easiest(even a connection to the bolt from the battery cable to the relay/power feed), but if you do take it to the fuse box, make sure the wire can't be chaffed, and/or don't tap into like an A/C - high side fan, or a fuel pump relay (do NOT want to overheat OR walk home just for a set of lights)

hope this helps,
chris
nrt racing

[radianguy]

I got power from the fuse box when I powered my fog lights. I got power from my Ignition fuse so when the truck is turned off the lights go out,that way i can leave the switch on and not worry about running the battery down.I used a relay and hooked it up according to the instructions that came with the lights.

[03TRDTacoma]

this is like the same thing for when i hook up amplifiers. i just run it to something that is only turned on when the key is in the on position (like pwr windows, etc) make sense?

[Flash75]

It's OK to use a signal from the fuse box area to operate the relay coil. On the square relays there is a diagram on the body. Terminals 85 & 86 are for the relay coil. Polarity isn't important, you can connect the fog light switch on terminal to relay terminal 85 and 12 volts from a switched fuse in the fuse box goes to terminal 86. The other side of the switch goes to ground. The other two relay terminals power the fog lights and since they carry considerable current it's best not to piggy back off another circuit, the lights will probably overload the circuit. I would run a fused power wire from the positive battery post to relay terminal 30. Wire the lights to terminal 87. Note. If using Toyota relays the relay coil should be terminals 1 & 2, usually smaller terminals. The power terminals are 3 & 4 and are usually bigger terminals.

Clifton