nymegacab

Hi, I am looking for a wire in my 06 Megacab (Hemi), that would trigger a relay only when the key is turned on. I found a fuse (# 32 or 33) under the hood that would do the job, but is there a wire in the bundle that would do that too ?

jbworm20

i always used to just take a test light and see which one was hot when the key was on then splice a relay into it

speakle

Here ya go. I would prefer to use the wire that goes to the cigarette lighter, easily accessable and chances of messing something up in the ignition are nil.
Ignition pink/white + ignition harness

Norm01

Do not use a test light on these newer vehicles, always use a meter.

Pooter

My cigarette lighter wire didnt work


I ended up using the Pink/white tracer under the column like you did, for my guages...

<-'05 truck though, not that it matters

speakle

Hm, thats odd. I tapped it on my truck to power on my aftermarket stereo. Whatever works. I installed a remote start system in my old '06 and had to deal with all of those wires, my headache is coming back just thinking about it.

rjm022

i have always used a test too. there are two ignition wires under the steering column.one is a thick red wire-can't remember the color of the other wire.

Mule Man

What is the problem with the test light if you use it properly?