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Old 02-22-2011, 02:35 PM
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64 Chevy Impala wiring question

Ok so I have a bbc w hei in a 64 Impala well got an aftermarket mini starter cant for the life of me figure out the electrical problem im having. I "thought" you just run the wire from the ignition to the switched post on the solenoid and do away with the other wire. Well, I have traced the wires and there is a splice in the purple wire coming from the ign switch that is going into the eng compartment well I thought thats the wire that I needed. I hook up the starter with the batt cable and the said wire above and get nothing. Coming from the bulkhead i have a purple,and a black wire w/insulation on the outside that was part of the old wiring to the starter. I thought it was the starter but I had brought it down to the local parts store and that thing works fine, so its in my wiring? Can anyone help a Kid out. and I am sorry if this is a stupid thread so please don't bash me. Thanks for your time.

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Old 02-22-2011, 03:42 PM
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I recently did this on a '69 Chevelle. From what I remember, their is the main wire from the battery(this one should be painfully obvious) and then I only used one of the smaller wires while disregarding the other. My guess is that if you're not getting anything, use the other wire that you're not currently using.

Oh! I'm also remembering that the starter had a terminal on it that did not end up having a wire attatched to it. Double check the wiring diagram that came with the starter and make certain the connections you made are correct. Maybe even post it up for us to see.
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Old 02-22-2011, 04:19 PM
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The purple wire is from the start position on the ignition switch. When the ign. sw. is turned to start, 12 volts should be on this wire at the starter S terminal.
The other terminal on the starter is for the point type distributor and is not used on the HEI.
If no voltage is on the purple wire and there is 12 volts at the ign. sw. then the ignition sw. is bad, the neutral safety sw. is bad or needing adjustment or there is bad connection between the ign. sw. and the starter.
Another test is to jumper between the battery + terminal and the S terminal on the starter to see if the starter is good.

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Old 02-22-2011, 04:20 PM
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I hate electricity
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Old 02-22-2011, 05:16 PM
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You will also need a hot wire in run and start to feed the HEI. The original wire to feed it in run will not supply enough voltage to keep the HEI happy.
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Old 02-22-2011, 06:22 PM
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You need to learn to LOVE electricity. Embrace it because----
It runs everything!!!

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Old 02-22-2011, 08:35 PM
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Quote:
Originally Posted by T-bucket23
You will also need a hot wire in run and start to feed the HEI. The original wire to feed it in run will not supply enough voltage to keep the HEI happy.
Thank you but i did know that just having issues with the starter right now.
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Old 02-22-2011, 08:37 PM
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Quote:
Originally Posted by vicrod
You need to learn to LOVE electricity. Embrace it because----
It runs everything!!!

vicrod
I know I was just being ignorant cause I dont know alot about it. Thanks for all the replies going to get a meter out and test the wires cause I am leaning towards bad ign switch but willknow more when the old man comes down and helps me out. Thanks again!
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Old 02-22-2011, 08:59 PM
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Quote:
Originally Posted by vicrod
The purple wire is from the start position on the ignition switch. When the ign. sw. is turned to start, 12 volts should be on this wire at the starter S terminal.
The other terminal on the starter is for the point type distributor and is not used on the HEI.
If no voltage is on the purple wire and there is 12 volts at the ign. sw. then the ignition sw. is bad, the neutral safety sw. is bad or needing adjustment or there is bad connection between the ign. sw. and the starter.
Another test is to jumper between the battery + terminal and the S terminal on the starter to see if the starter is good.

vicrod
Ok on my original post I have what looks like an added wire its spliced under dash to the purple wire from the harness under the dash which is ran from the ign switch to the neutral ssafety switch, then i have a purple and a black insulated wire (think the resistance wire) the added wire is the one that should be the wire thats hooked up to the starter solenoid right? also when you say the neutral safety switch needs adjusting , how do you do that? i do apologize
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Old 02-23-2011, 08:02 AM
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Quote:
Originally Posted by 64r1
I know I was just being ignorant cause I dont know alot about it. Thanks for all the replies going to get a meter out and test the wires cause I am leaning towards bad ign switch but willknow more when the old man comes down and helps me out. Thanks again!
It is more common for a NSS to go bad or a wire to be broken than an ignition switch failure.

Generally you have the start wire from the ignition, (heavy purple) to the NSS and from there to the starter.
Start by turning the ignition to start and see if the ignition switch is working by checking for power on the start wire, if it is check both sides of the NSS for power with the key in start (an assistant will be very helpful), if this checks good then the wire from the NSS is bad or the starter is no good.
Are you sure the starter works. You can test it by jumping the small terminal to the large stud to see if it cranks.
You said "aftermarket starter", its not one of those $49 chrome ones is it. They have a very high failure rate.
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Old 02-24-2011, 10:15 PM
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Nope not a cheap starter and yea it works. well, after replacing the nss, and ign switch still got nothing grabbed a volt meter and seen a problem well it was the purple wire coming of the neutral safety switch it was broke lol. Oh well atleast I didnt drop any 'real' money in it before finding out it was a simple fix. Anyway another question, I know the HEI needs a constant 12v source to run properly, my question is can I run a 12 gauge wire from an unused circuit on the fuse block? I have 2 ignition posts not used on the panel will that work to supply the HEI?
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Old 02-25-2011, 12:33 PM
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HEI can be powered from the fuse block IGNITION ON section.

vicrod
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