wiring LED taillights????

Alright i know when you wire LEDs you need a TAC unit- which is basicly just a resistor to reduce the 12v source...

so my ??? is where can i get a TAC unit??? FBI has them but there like 65 dollars- i was just wondering if there was somewhere else cheaper and faster than FBI..

when we did my LED's, we wired them diretly into the stock taillight wiring under the truck. No boxes or resistors were needed on mine.

ive tried that and they wont work on a 12v.. FBI told me they needed a TAC unit.

but thanks for the input ill try it again just to make sure..

Hi-Tech told me I need a converter box too. I hooked it up and nothing worked right. Just figred the box was bad. If we're talking about the same thing, then what you need is a 5 to 4 wire converter. You can get them at any autoparts store that sells trailer lights / wiring. I paid like $60 for the box from hi-tech. When that didnt work, I figured the box was bad. Before I bought another, someone pointed out to me that you can get the same thing for like $15 from any autoparts store.

if you have a s-10 fbi will even tell you that you do not need a TAC

what about a 2 wire led bar on a tacoma ?

Ya you have to use the TAC units specaiyll if you bought them from FBI , and when you get the TAC units be careful with them , you cant pull the wire any you are fucked beacsue the ones ive got and it wont work properly,