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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Novadiecast on June 25, 2010, 08:09:36 pm

Title: 1980 P-30 Ignition wires?
Post by: Novadiecast on June 25, 2010, 08:09:36 pm

Can someone point me in the right direction here. I have a 1980 P-30 Chevrolet Box truck and the previous owner cut the ignition wires at the key switch and installed some aftermarket type of key switch. I have a new key switch for the truck and the correct plug that plugs into it. The problem is the colors of the wires do not match up correctly. I need a wiring diagram for this P-30 Step Van so I can hook it up correctly. Anybody know where I can turn?????? Thanks in advance for your help.

Title: Re: 1980 P-30 Ignition wires?
Post by: VileZambonie on June 25, 2010, 09:17:46 pm

I would suggest you get a service manual.

Title: Re: 1980 P-30 Ignition wires?
Post by: beastie_3 on June 26, 2010, 01:06:47 am

I agree with a manual. How many wires are there, and what is each color? Include the color of the stripe, if there is one. Also, look at your starter and see what color wires are going there as well.

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on June 26, 2010, 10:12:54 am

I too would like a manual, just don't know where to find one.

The problem is the wires in the harness do not match up to the plug that was left in the truck(assuming it was the original that was cut off). I got one from an earlier step van and those colors are different also. So a diagram would show the pin out of the plug, I hope.

Title: Re: 1980 P-30 Ignition wires?
Post by: beastie_3 on June 26, 2010, 10:54:10 am

Looks like there is a manual. I just did the hard work for you. Search.

http://www.gregsonline.com/eshop/CDs/Chevrolet/80TSMC.htm

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on June 26, 2010, 11:02:45 am

Thank You!!!! I have searched and searched for 5 days now!!

Title: Re: 1980 P-30 Ignition wires?
Post by: jaredts on June 26, 2010, 11:36:41 am

How many wires are there?  A service manual would be nice, but with a multimeter I would think you could figure it out.  There should be a wire hot all the time, a wire that gets 12v in the acc, on, and start positions.  Using the existing switch as a guide with a meter, you should be able to track down which wire goes where.  If I was into my column I'd take a picture for you to show the colors.

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on June 26, 2010, 12:12:49 pm

There are 7 wires and it is not in the column it is in the dash like a van.

Title: Re: 1980 P-30 Ignition wires?
Post by: jaredts on June 26, 2010, 03:25:28 pm

Sorry, should've read a little closer.

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on July 02, 2010, 04:12:49 pm

Ok, got the manual above 35.00 and it says in the index:

Ignition switch operation circuit go to page...................Page 8A-21

Guess what....it stops a 8A-16 then goes to 8B-1, there is no page 8A-21??????

 ??? ??? ??? ??? ???
Now what???

Title: Re: 1980 P-30 Ignition wires?
Post by: beastie_3 on July 02, 2010, 06:24:46 pm

Call them.

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on July 07, 2010, 07:31:19 am

We you can't call them. You have to send an email. I did that and have got no response from them at all. I sent a second email today......
This thing is driving me crazy!

Title: Re: 1980 P-30 Ignition wires?
Post by: zieg85 on July 07, 2010, 09:44:56 am

I have a set of Mitchell manuals on CD Rom, I will look to see if they list what you are looking for...

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on July 07, 2010, 02:30:49 pm

Thanks Zieg!!

Title: Re: 1980 P-30 Ignition wires?
Post by: zieg85 on July 07, 2010, 03:22:41 pm

My manuals on CD-rom only go back as far as 1983, sorry.  My old desktop was not being very nice and froze up... It is only 105 degrees in the garage, can't imagine why it did that...

Title: Re: 1980 P-30 Ignition wires?
Post by: Layne on July 07, 2010, 03:45:03 pm

Shouldn't have froze lol. Meltdown :D

Title: Re: 1980 P-30 Ignition wires?
Post by: zieg85 on July 07, 2010, 03:57:07 pm

Quote from: Layne on July 07, 2010, 03:45:03 pm

Shouldn't have froze lol. Meltdown :D

I know, from the 79 degrees AC to 15 minutes in the garage I had to ring out my shirt...  The computer hasn't been fired up in about a year, lucky for me... It is an old Pentium II with Windows 95 but it is the only thing that will run the Mitchel program....

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on July 07, 2010, 04:18:54 pm

Thanks for trying Zieg maybe it will cool down, See if the earlist year ignition switch plug wiring is there if possible. Maybe it is the same. These didn't change much.

I got to be close, I got it working but the idiot light for the brakes stays on when the key is in the off position. It does have a bad break line. Just trying to get the electrical straightened out first. It was a 400.00 step van with only 60,000 miles so I could not pass it up.

Title: Re: 1980 P-30 Ignition wires?
Post by: zieg85 on July 07, 2010, 05:12:13 pm

A running, moving storage shed for $400??? Wow wish I could run across one.  I will go back later this evening and try it again.  I wish I had a printer to work with that machine but it is too old.  I guess I am lucky it still starts up...

Title: Re: 1980 P-30 Ignition wires?
Post by: Novadiecast on July 07, 2010, 05:42:31 pm

Yea it was a good deal!! I plan to fix it up alittle and use it for my construction business. It runs like a top and shifts great(4 Speed) just needs breaks/tires and the usual tlc.