Truck Wiring Harness Question

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Mar 18, 2011 | 08:13 AM

mlevario99

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Staging Lane

Joined: May 2010

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From: El Paso, TX

Truck Wiring Harness Question

I am installing a 5.3 in a 68 Suburban. I am working in the harness, removing all the wires not needed, but I last night I found out that some of the wires that are needed were cut, when I remove all the electric tape thats when I notice it. My question is, can I fix the wires by soldering them, or am I better off trying to get another harness, and if this is the case, the engine came from a 2000 silverado, do I need to get a wiring harness from that same year, or can I use any truck wiring harness.

Thanks for your help

Mar 18, 2011 | 09:01 AM

FastKat

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From: Pittsburgh, PA

You can really just solder the wires. I wouldn't even think about getting a new harness unless there are a lot of wires cut and you don't know which ones are which... for example, there are two green wires cut and you don't know which ones go together.

Take your time stripping the wires, twisting them together, and do a good job soldering. If you need to, practice a few times on some old wires until you feel comfortable.

Also, go out and get yourself some adhesive-lined heat shrink tubing. I usually get mine at Fastenall, but other places sell it too. The adhesive lined stuff has glue inside that melts and seals the connection when the tubing shrinks. If you don't have a heat gun, you could probably use a hair dryer to heat it up. Don't forget to put the tubing on BEFORE you make the connection!

Mar 18, 2011 | 09:11 AM

devlmaycry

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From: georgia

You can use some of those wires you removed to repair or replace the damaged wires.

Mar 19, 2011 | 08:07 AM

Old Geezer

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From: GA, USA

Get a diagram of the wiring, and you can trace each 1 to a pin in the pcm connector[s], look at the pinout list, and you will be able to ID every wire in the harness.

I use the info at www.alldatadiy.com. A cheap way to get most all the info you need about the entire donor vehicle...

Mar 26, 2011 | 09:06 AM

mlevario99

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Staging Lane

Joined: May 2010

Posts: 71

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From: El Paso, TX

thanks guys, I am going to solder the broken wires. I have another question, last night I was almost done removing all the unnecessary wires when I notice that three wires are cut, as I found out those threee wires are for the Crankshaft position sensor, can I get the plug from the dealer or do I need to find it at the salvage yard.

Thanks

Mar 26, 2011 | 09:53 AM

garys 68

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From: Camdenton, MO

You can probably buy the connector/pigtail cheaper online.
Here's one site.
http://www.eficonnection.com/eficonn...ngineType.aspx

Apr 5, 2011 | 07:05 PM

bonehead79

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From: Hamden CT

or go to the junkyard and cut one off, alot of the older gm vehicles have the same plug ends you can grab one from another gm around 99-00-01-02 i just did the same harness but about 15 wires were broken in my harness but it was very easy for me cuz of mitchell on demand lol