underhood wire harness install.
Thread Starter
Burning Brakes
Joined: Dec 2004
Posts: 825
Likes: 0
From: Hanging out back with the dark horses. Wa.
underhood wire harness install.
88 auto A/C and smog. How long how hard to replace underhood wiring harness?
I figure 15-20 min to get the old one out.
replacing with good used updated 88 harness. Anybody want to do it for me
I figure 15-20 min to get the old one out.
replacing with good used updated 88 harness. Anybody want to do it for me
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by sniperdiver37
88 auto A/C and smog. How long how hard to replace underhood wiring harness?
I figure 15-20 min to get the old one out.
replacing with good used updated 88 harness. Anybody want to do it for me
I figure 15-20 min to get the old one out.
replacing with good used updated 88 harness. Anybody want to do it for me
try about 15-20 hours 
Remember it goes all the way through the firewall, and to both sides behind the dash
Drifting
Joined: Dec 1999
Posts: 1,319
Likes: 2
From: Douglasville GA
Originally Posted by ski_dwn_it
try about 15-20 hours Remember it goes all the way through the firewall, and to both sides behind the dash
Which wiring harness underhood? The forward lighting harness or the engine harness? The C100 connector at the firewall separates using a 1/4" socket (I think that is the size - can verify if need be). The inside/dash harness and the underhood harness are three different components...all joined at the C100 connector behind the battery and brake booster.
I just replaced the underhood forward lighting harness and it was not a bad job.
Let me know which you need to replace.
-Tom
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
If it is seperated from the Alternator, Starter/ Dash info harness down by the battery, I would guess you could put it back in @ an hour if you can reach the injectors easily.
I seperated my alternator etc from the ECM harness and it makes it a lot easier.
Take your distributor out for easy access to ground wires etc.
I seperated my alternator etc from the ECM harness and it makes it a lot easier.
Take your distributor out for easy access to ground wires etc.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by tommelton
Nope.
Which wiring harness underhood? The forward lighting harness or the engine harness? The C100 connector at the firewall separates using a 1/4" socket (I think that is the size - can verify if need be). The inside/dash harness and the underhood harness are three different components...all joined at the C100 connector behind the battery and brake booster.
I just replaced the underhood forward lighting harness and it was not a bad job.
Let me know which you need to replace.
-Tom
Which wiring harness underhood? The forward lighting harness or the engine harness? The C100 connector at the firewall separates using a 1/4" socket (I think that is the size - can verify if need be). The inside/dash harness and the underhood harness are three different components...all joined at the C100 connector behind the battery and brake booster.
I just replaced the underhood forward lighting harness and it was not a bad job.
Let me know which you need to replace.
-Tom
Learn something new everyday
I am sure getting at it with the motor in the car will be fun, but with the removal of the distributer, it shouldn't be too bad.
Le Mans Master
Joined: Sep 2004
Posts: 6,018
Likes: 563
From: Conroe Texas
i must be missing something. when i had my 89 down and tried to pull the harness out, it went through the firewall, but did not come apart at that bulhead connector. the only thing i could see that bulkhead piece doing was to provide a seal for the harness going through the firewall. my 86 that i am parting out is the same way.
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Originally Posted by Sleazy Rider
i must be missing something. when i had my 89 down and tried to pull the harness out, it went through the firewall, but did not come apart at that bulhead connector. the only thing i could see that bulkhead piece doing was to provide a seal for the harness going through the firewall. my 86 that i am parting out is the same way.
That is what I figured that was there, but by the sounds of the guys above, maybe it is a connector.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
The harness at the firewall (pass side) can't be separated as far as I know. Wish it could, though. Think they were referring to just the forward lamp harness on the drivers side.
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Melting Slicks
Joined: Feb 2002
Posts: 2,699
Likes: 2
From: The Black Hole LA
Originally Posted by cuisinartvette
The harness at the firewall (pass side) can't be separated as far as I know. Wish it could, though. Think they were referring to just the forward lamp harness on the drivers side.
If you have the engine out (like I did) it takes about 15-20 minutes. I have no idea with it in but I would think you'd atleast have to pull the distributor because the harness runs in between the block and the firewall.
Le Mans Master
Joined: Sep 2004
Posts: 6,018
Likes: 563
From: Conroe Texas
Originally Posted by cuisinartvette
The harness at the firewall (pass side) can't be separated as far as I know. Wish it could, though. Think they were referring to just the forward lamp harness on the drivers side.