wiring harness

#1

I have a 1990 chev. 4wd 454. My wiring harness under the hood burnt.

Will a harness from a 350 work

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#2

My condolences...I hope your search is easier than mine.

This is just a guess, but I'm betting the harness will be the same.
Very little of it actually goes to the engine--just the wires to the
alternator, starter, and to the distributor.

Of course, I don't know whether you're dealing with TBI (I assume you
are) in which case you'll probably need a harness that has the same
setup, computer wise.

How did it happen?

~jp

#3

bought it that way

Jon R. Pickens wrote:

Quote:

My condolences...I hope your search is easier than mine.

This is just a guess, but I'm betting the harness will be the same.
Very little of it actually goes to the engine--just the wires to the
alternator, starter, and to the distributor.

Of course, I don't know whether you're dealing with TBI (I assume you
are) in which case you'll probably need a harness that has the same
setup, computer wise.

How did it happen?

~jp

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Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/chevrolet-trucks/200602/1

#4

Hmm...if there's any of the existing harness left, I'd try to make note
of the various connectors attached to its ends. Then if you locate one
it should be fairly easy to check whether it'll fit.

I don't know how similar your truck is to my Blazer (If it's a Suburban
or Blazer should be real similar) but mine has a couple of harnesses
coming out of the firewall. One goes from the ESC (electronic spark
control) to the distributor and the other runs to the heat/AC box from
the dash controls. The heater harness was fairly easy to find, but the
ESC was not. I got the main engine harness from Shades here on
"alt.autos.4x4.chevy-trucks" from an '85 Suburban he was parting out
and it was identical in every way.

Is yours a pickup or Suburban? I can be on the lookout. I'm always
looking for parts for mine and often run across stuff I don't need.

~jp

#5

See if this is similar to what you need...

http://cgi.ebay.com/ebaymotors/1988-95-Chevy-Truck-TBI-Engine-Wiring-Harness-EFI_W0QQcmdZViewItemQQcategoryZ33553QQitemZ8037109 077QQrdZ1

(sorry, TinyURL is blocked here at work)

~jp

#6

The First Phase of your project Shud be to FIX the REASON it SMOKED !

The Harness Didnot Smoke itself, Something Caused it to SMOKE

Jon R. Pickens wrote:

Quote:

Hmm...if there's any of the existing harness left, I'd try to make note
of the various connectors attached to its ends. Then if you locate one
it should be fairly easy to check whether it'll fit.

I don't know how similar your truck is to my Blazer (If it's a Suburban
or Blazer should be real similar) but mine has a couple of harnesses
coming out of the firewall. One goes from the ESC (electronic spark
control) to the distributor and the other runs to the heat/AC box from
the dash controls. The heater harness was fairly easy to find, but the
ESC was not. I got the main engine harness from Shades here on
"alt.autos.4x4.chevy-trucks" from an '85 Suburban he was parting out
and it was identical in every way.

Is yours a pickup or Suburban? I can be on the lookout. I'm always
looking for parts for mine and often run across stuff I don't need.

~jp

#7

True... However he said it burned. That meant an engine fire and not
an electrical problem in my case. Could've been a fuel leak, he wasn't
specific in his post.

Obviously it's possible, but what kind of electrical failure has to
occur in order to smoke the whole harness? I'm actually asking, not
mocking :-) I'm curious to know just to have it stored in my memory
banks.

~jp

#8

dont know what started the fire .possible wires against exaust . need emc
harness

Jon R. Pickens wrote:

Quote:

True... However he said it burned. That meant an engine fire and not
an electrical problem in my case. Could've been a fuel leak, he wasn't
specific in his post.

Obviously it's possible, but what kind of electrical failure has to
occur in order to smoke the whole harness? I'm actually asking, not
mocking :-) I'm curious to know just to have it stored in my memory
banks.

~jp

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#9

Ok...the ECM harness... What model of truck is it? Pickup, Suburban
or Blazer?

~jp

#10

Jon R. Pickens wrote:

Quote:

Ok...the ECM harness... What model of truck is it? Pickup, Suburban
or Blazer?

~jp

We would know that info if Those who Reply to post would turn on
"QUOTE on REPLY " in their computer software

Just like the previous poster Has it turned off and His Reply Makes No
Sense !