Engine Harness

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Ronie300zx
Posts: 17
Joined: Fri Feb 13, 2015 8:34 pm
Car: Nissan 300zx red N/A

Post

Im new to this i have a 1993 nissan 300zx. I'm trying to take the engine harness out and I'm trying to find the easiest way to do it, i already unplugged everything , have all the wires hanging out I'm just trying to find out how to take off the blower and heater core without breaking anything. like do i have to take off the dash I'm just trying to find a way to finish this off.
Last edited by Rogue One on Thu Mar 19, 2015 7:40 pm, edited 1 time in total.
Reason: Moved to correct forum


Rubyz32
Posts: 120
Joined: Fri Apr 18, 2014 4:41 pm
Car: 90 n/a z32
No mods as of yet

Post

No, you do not have to remove the dash. I pulled a/c box (with no intention of putting it back in) fairly easily. Once you have that out, the rest is cake. Especially if you got your harness from wiring specialties. ;)

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NolimitZ32
Posts: 7042
Joined: Fri Jun 27, 2008 9:07 am
Car: 91 AG2 2+0 TTMT swap/E39 BMW 540i6/E53 4.6is Dinan S3
Location: Houston, TX

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The evaporator comes out first, there is 1 nut on top and 2 on bottom, the top one will require a 6" or longer extension to get to, you can see it by laying on the floorboard with a flashlight or feel it out. Make sure you have the 2 AC hard lines disconnected and the rubber grommet removed on the engine bay side of the firewall where these lines penetrate the firewall. The blower assy has 2 bolts on top IIRC and 2 on bottom, remove these and you should be able to maneuver it out with a slight bit of foul language. Be mindful that the EFI harness goes through a series of brackets attached to the firewall about even with the valley, these brackets need to be unbolted to get it out, also there is a spot slightly off center on the drivers side of the fire wall where part of the harness is routed under some hardlines, this will likely be the biggest B.

Ronie300zx
Posts: 17
Joined: Fri Feb 13, 2015 8:34 pm
Car: Nissan 300zx red N/A

Post

Thanks ill try it out this weekend hopefully i can do it without breaking anything lol


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