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Old 11-01-2005, 09:07 PM
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stock harness confusion

i'm about to put a 350 in my 85 monte ss and i have no clue what wires go where. ( i didn't take out the 305, i got it like that.) i know i need alt and dist. but there's alot more than that hanging around in there. and i can't tell which ones to cap off and which ones to use. the colors don't really match the wiring schmatic in my chiltons manual. can some one out there bestow upon me some electrical knowledge?

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Old 11-02-2005, 04:21 AM
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Doc here,

Do these help?




As far as learning Wire harness procedures..

First READ the Trouble shooting chapter in the beginning of the electrical section of your Chiltons..

until you understand it..

Then if you have more questions..were all here glad to help!

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Old 11-02-2005, 11:08 AM
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this one makes alot more sense than the one in my manual. thanks.
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Old 11-02-2005, 01:02 PM
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but i wouldn't have an ECM since it came carburated, right?
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Old 11-02-2005, 05:34 PM
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Doc here,

Yes, in fact you do..Carbed or not...

Al GM vehicles manufactured after 1980 have a computer to control Engine functions, and some (later models) control lighting and body control functions...

It should be located in the right kick panel Or Behind the glove box..

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Old 11-03-2005, 10:38 PM
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ok new problem. the ecm has been removed. since i'm not hooking up anything that is controled by it, do i still need it? and if i do where would i find one?
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Old 11-04-2005, 03:48 AM
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Doc here,

You need to convert to a pre 80's HEI or Aftermarket HEI..(see above diagram under distributer connector connections from the computer)

The pre 80 HEI will not require this plug to operate, just power and tach..

You will also have to provide a switch or bypass For The TCC (Torque Converter Control, if it's an automatic)

The rest can go away..

HOWEVER, I highly suggest you go to a 4 ME Carb..(no computer connections) as The 4 EME won't run exactly right...It will run OK, but not optimum..and at fuel prices today....well you get the idea..

I'm hoping you don't need to pass a smog inspection for your state...cuz...you won't...you need to comply with Federal standards for 1985 as far as equipment in visual inspection, and emissions standards on the sniffer..Of course this is mute if your state dosn't require it..

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Last edited by docvette; 11-04-2005 at 03:54 AM.
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Old 11-04-2005, 11:17 AM
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which in north carolina, in my county, where i'm registering it, no emissions test is required. thanks a bunch for the help.
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Old 11-04-2005, 05:06 PM
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Doc Here,



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