What headlight wire do I tap so boost gauge lights go on/off with headlights?

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  • thread starter
  • #1

got the boost gauge installed, thank you to all of you who provided feedback on the proper fittings for the supercharger manifold!

You're reading: What headlight wire do I tap so boost gauge lights go on/off with headlights?

question: i’m trying to figure out which wire i need to splice into from the headlight switch in order to turn the gauge lighting on and off with the headlights. the car is a 19 and there are several wires to choose from hoping somebody has done this or knows how to figure it out ?

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  • #2

there’s prob not 12 v coming from the switch as the headlights are commanded by the bcm.

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  • #3

there’s prob not 12 v coming from the switch as the headlights are commanded by the bcm.

bcm?

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  • #4

body control module, or hell maybe the ecm(engine control module). it’s not straight to the switch that’s for sure because of the light sensor and automatic headlights and how the brights reset when you shut the ignition off.

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  • #6

you can get the 12v but you won’t get dimming.
writings fine though. purple if you use auto lights, purple/black for manual. i used wire taps so i didn’t have to splice.

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  • #7

are you talking about a purple wire in the headlamp switch?

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  • #8

are you talking about a purple wire in the headlamp switch?

yes. i had the diagram somewhere but i can’t find it on my computer now. but you can look it up. i used two wire taps and the autometer dimmer for my cobalt gauge. stuck one tap in by one of the black ground wires and the other by the purple and it works perfectly.

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  • #9

has anybody figured this out yet?

i know for a fact that the dimming wire on the headlight switch can be tapped into on a 2011 mustang as per autometer video on youtube. this allows you to control the brightness of your cobalt gauges in conjunction with the interior dash lighting.

so i think it’s 100% doable on the 6th gen.

i am terrible with figuring out electronics so could really use someone’s help. i’ll then create a video so it’s easier for everyone after the this.

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  • #10

just connect it to a key “on” fuse.

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  • #11

just connect it to a key “on” fuse.

thats 100% an option but my fear is being blinded by the gauges at night haha

i just want an elegant solution which ties in with the oem dimming controls. alternatively, i have purchased the autometer dimmer unit but that isn’t as elegant as i would like it to be.

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  • #12

thats 100% an option but my fear is being blinded by the gauges at night haha

Read more: Avoid Hazy Headlights and Make Them Shine Like New With These 7 Steps

i just want an elegant solution which ties in with the oem dimming controls. alternatively, i have purchased the autometer dimmer unit but that isn’t as elegant as i would like it to be.

what gauge will you be using and placement?

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  • #13

what gauge will you be using and placement?

so i have purchased the 2011 ford racing boss 302 triple gauge pod and have the autometer cobalt fuel pressure, boost/vac and oil pressure gauges. all mechanical with led lights.

i will place the gauge pod on the centre of the dash where the speaker is but just set back. i have bought a new cover to drill through.

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  • #14

so i have purchased the 2011 ford racing boss 302 triple gauge pod and have the autometer cobalt fuel pressure, boost/vac and oil pressure gauges. all mechanical with led lights.

i will place the gauge pod on the centre of the dash where the speaker is but just set back. i have bought a new cover to drill through.

in the center of the dash, it won’t be too bright, and i believe the cobalt mechanicals aren’t crazy bright either.

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  • #15

in the center of the dash, it won’t be too bright, and i believe the cobalt mechanicals aren’t crazy bright either.

nice. in that case. i’ll wire in the autometer dimmer so that atleast i have some control if required and pass on the dimming. would be nice though.

Source: http://tonupboys.com
Category: Headlights