single black white wire under hood by brake booster

fastr68 · 11-03-2009, 06:03 PM

ok i am conused

on my 91 2wd pickup there is a small single black with white stripe wire by the brake booster and by the a/c and uel pump relays and it has a round plastic plug end on it and it comes out to the main engine harness there and des not plug into anything

what is it for?

hopefully cruise because it does not work in mine

or maybe it is hood light ground ??

but it has no ground in it with the tester...

hmm

thanks

MadMikeZ28 · 11-03-2009, 10:00 PM

Black and white is a ground wire. Hood light usualy grounds too the hood and would just have an orange wire for power. Also they are usualy on the right side of the hood. I assume because that is where the dipsticks are located.

But if that wire has no ground then make sure it also does not have power and then ground it. Maybe your cruise would then work. You could also see if your cruise has a black/white wire and check continuity. B/W is also for the neutral safety switch and speed buffer

fastr68 · 11-04-2009, 01:03 PM

my hood wires are on driver side

all first gen ones are that ive ever seen

im so confused about this wire...

im gonna have to get a pic i guess,,.

or try to find another late first gen to look at

hmm..

thanks

phantom_mia · 11-04-2009, 01:17 PM

i don't remember what color it is but there is a test wire over behind the booster so you can test for power to your fuel pump and it has a funny end on it that sounds like what your talking about

MadMikeZ28 · 11-04-2009, 02:35 PM

Quote: Originally Posted by phantom_mia

i don't remember what color it is but there is a test wire over behind the booster so you can test for power to your fuel pump and it has a funny end on it that sounds like what your talking about

I thought that one was usualy red. But that one would be easy enough to find out because it comes right off the relay and his wire is close too the relay location.

11-03-2009, 06:03 PM	#1
fastr68 easterwabbit Join Date: Sep 2002 Posts: 597 Location: Lincoln, IL User is: OffLine	single black white wire under hood by brake booster ok i am conused on my 91 2wd pickup there is a small single black with white stripe wire by the brake booster and by the a/c and uel pump relays and it has a round plastic plug end on it and it comes out to the main engine harness there and des not plug into anything what is it for? hopefully cruise because it does not work in mine or maybe it is hood light ground ?? but it has no ground in it with the tester... hmm thanks Last edited by fastr68 : 11-03-2009 at 06:06 PM.
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11-03-2009, 10:00 PM	#2
MadMikeZ28 Stealin JTC's sandwichs Age: 41 Join Date: Jul 2006 Posts: 4,417 Location: In jtc's basement eating the salami sandwich from his fridge User is: OffLine	Re: single black white wire under hood by brake booster Black and white is a ground wire. Hood light usualy grounds too the hood and would just have an orange wire for power. Also they are usualy on the right side of the hood. I assume because that is where the dipsticks are located. But if that wire has no ground then make sure it also does not have power and then ground it. Maybe your cruise would then work. You could also see if your cruise has a black/white wire and check continuity. B/W is also for the neutral safety switch and speed buffer
	[Reply w/Quote]

11-04-2009, 01:03 PM	#3
fastr68 easterwabbit Join Date: Sep 2002 Posts: 597 Location: Lincoln, IL User is: OffLine	Re: single black white wire under hood by brake booster my hood wires are on driver side all first gen ones are that ive ever seen im so confused about this wire... im gonna have to get a pic i guess,,. or try to find another late first gen to look at hmm.. thanks
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11-04-2009, 01:17 PM	#4
phantom_mia trouble maker Age: 44 Join Date: Nov 2007 Posts: 1,877 Location: west palm beach fl User is: OffLine	Re: single black white wire under hood by brake booster i don't remember what color it is but there is a test wire over behind the booster so you can test for power to your fuel pump and it has a funny end on it that sounds like what your talking about
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11-04-2009, 02:35 PM	#5
MadMikeZ28 Stealin JTC's sandwichs Age: 41 Join Date: Jul 2006 Posts: 4,417 Location: In jtc's basement eating the salami sandwich from his fridge User is: OffLine	Re: single black white wire under hood by brake booster Quote: Originally Posted by phantom_mia i don't remember what color it is but there is a test wire over behind the booster so you can test for power to your fuel pump and it has a funny end on it that sounds like what your talking about I thought that one was usualy red. But that one would be easy enough to find out because it comes right off the relay and his wire is close too the relay location.
	[Reply w/Quote]