70 chevelle engine wiring - Chevelle Tech
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post #1 of 17 (permalink) Old Jun 6th, 09, 9:43 PM Thread Starter
 
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70 chevelle engine wiring

hey all i have a few wires i have no idea what they are.any help would be great.

white rope coved wire
orange
dark blue there are 2 on the harness 1 goes to the wiper motor and the other is cut.
and a black with a pink or puple strip.

i have no clue how to read the wiring diagram.

thanks all
mike
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post #2 of 17 (permalink) Old Jun 6th, 09, 10:27 PM
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Re: 70 chevelle engine wiring

What wiring diagram do you have as a reference? I have a large scale, but also would help to know if it's a SS, A/C, 6 cyl?
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post #3 of 17 (permalink) Old Jun 6th, 09, 10:29 PM
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Re: 70 chevelle engine wiring

Where does the harness originate? Left side of the firewall junction, as viewed front front of car?
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post #4 of 17 (permalink) Old Jun 6th, 09, 10:36 PM
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Re: 70 chevelle engine wiring

Sign on to Autozones site -top left -'become a Member'.
They have wiring diagrams for quite a few vehicles.
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post #5 of 17 (permalink) Old Jun 6th, 09, 10:38 PM Thread Starter
 
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Re: 70 chevelle engine wiring

oh sorry guys its a ss with a/c. and the wiring harness is on the right side of the firewall if your staring at the back of the car. its to the right of the master cylinder. and the wireing diagram book is from a jim osborn reproduction book just on a 1970 chevelle wiring diagram manual. dont know where my dad got it from but it has like 8 pages of wirning diagrams. hope that helps.
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post #6 of 17 (permalink) Old Jun 6th, 09, 10:46 PM Thread Starter
 
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Re: 70 chevelle engine wiring

here is a picture of the wires. sorry its not beter.








and heres what the diagram looks like.it was the 1st diagram.






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post #7 of 17 (permalink) Old Jun 6th, 09, 11:50 PM
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Re: 70 chevelle engine wiring

If I knew how to post a pic here, I think I can help. But your wires don't look familiar yet.
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post #8 of 17 (permalink) Old Jun 7th, 09, 12:03 AM Thread Starter
 
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Re: 70 chevelle engine wiring

heres the loction of the wires.




its the wires on the left of this harness.
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post #9 of 17 (permalink) Old Jun 7th, 09, 12:05 AM
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Re: 70 chevelle engine wiring

Are you sure they're both dark blue? If one is Light blue, it goes to your left turn signal assy, and the dark blue goes to the right. The two browns on either side of the light blue in the harness, go to the turns signal as well. I think I'm right, here. You should unwrap it to see if more wires are cut BUT- your statement that one of these wires goes to the wiper motor doesn't ring right. The wiper motor wires seem to go to the other half of the bulkhead connector, according to my diagrams.
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post #10 of 17 (permalink) Old Jun 7th, 09, 12:07 AM
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Re: 70 chevelle engine wiring

Ah- that's better.... First drawing, lower right corner, shows the bulkhead connector.
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post #11 of 17 (permalink) Old Jun 7th, 09, 12:10 AM
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Re: 70 chevelle engine wiring

last "photo", are we talking about the connector on the left, or right side? Which group of wires?
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post #12 of 17 (permalink) Old Jun 7th, 09, 12:19 AM Thread Starter
 
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Re: 70 chevelle engine wiring

on the left.
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post #13 of 17 (permalink) Old Jun 7th, 09, 12:31 AM
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Re: 70 chevelle engine wiring

okay, then in the lower right corner of the first wiring diagram, just to the left, and slightly below the wiper motor is the connector. It looks like an upside down "U". THAT is where you start tracing wires from. If you use a meter to check continuity, you should be able to trace that whole block. "DBL" is dark blue, "LBL" is light blue "P" is probably pink, "T" is tan
"B" is black, " OR" is orange, and "PPL" is purple.
Hope that is helpful
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post #14 of 17 (permalink) Old Jun 7th, 09, 12:33 AM
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Re: 70 chevelle engine wiring

The number preceeding the color on the diagram is the gauge of the wire, smaller number bigger wire. "20" is about the thickness of a wire coat hanger
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post #15 of 17 (permalink) Old Jun 7th, 09, 12:40 AM Thread Starter
 
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Re: 70 chevelle engine wiring

man thanks thats it. i got it. cheers to you bro.
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