Need a little help Dash wiring

[neno74]

Hi SyTy friends,

I have a 1993 Typhoon that I disassembled years ago and I am finally getting around to putting it back together. Unfortunately, my mind is not as sharp and young as it used to be and I don't exactly recall how all the wires under the dash are routed. Repair manuals and dealer part reference pics are somewhat helpful but not as helpful as say an actual photo. I thought I took pics years ago during disassembly but somehow I can't find this particular group of photos referencing under dash stuff. I am particulary interested in how the wires around the steering column / brake pedal support go. Also, is there an actual assembly manual available for these trucks that perhaps assembly line workers would reference? Thanks everyone and anyone who can help!

Neno

 

[liquidswords88]

From the looks of it, its all just stuffed in there from the factory. I've had my truck all tore apart and i just placed things where they would reach without tension on the connectors. I would not get too hung up on the exact factory routing, from the looks of these trucks they didn't care much when they did it at the factory

 

[DaveP's Ghost]

Hi Neno!

I was wondering what progress you had made in the year since I got your wiring back to you.

Yes there are "assembly manuals" and documentation/instructions to the assembly plants on how to build and what parts to use. I have some of these for Corvettes, but have never seen any for the GM portion of the S-series. I have seen the Instructions for PAS operations (written by PAS) that were performed there. PAS did not do the IP assembly or wiring, so those wouldn't help.

The Cross-Body harness goes from door to door across the base of the windshield. In a 93, this harness has a branch that goes downward, inboard of the fuse box, and ends up at the rear of the center console for the Remote Keyless Entry module. Tape this harness to the floor pan in a position that it won't be crushed by the seat base when it is bolted in. The rear lamp harness runs along with this branch for a foot or two, but then continues in the little channel in the floor pan.

The Instrument Panel harness goes into the IP before the IP goes into the truck. The A/C ducting goes in after the harness is in. (The harness is behind the ducting.) The cruise and fog light harnesses are tie-wrapped to the main harness. I install as much of the stuff that goes in the IP as possible before I install the IP in the truck. This includes the instrument cluster, surround, HVAC controls, Light Switch panel, and the Fog and Mirror switches. Sometimes, even the radio. (This is the way the factory did it. The IP was complete before it was installed. The installers hooked everything up and put the fasteners in. Probably took less than 60 seconds on the line.)

I leave the steering column completely out of the truck until the IP is installed. I do them by myself, but having a helper makes it easier. Sit in the seat with the IP in your lap, and position it close enough to make some of the interface connections: IP to Cross body plug, Power mirrors to CB, HVAC controls to HVAC harness. Several grounds to the Buss Bar Ground on the left side of the pedal support. I do the Temp cable to heater box too.

After the IP is fastened, the fuse box mounted, and a re-check for any missed interconnections, install the steering column. There are several inter-connections that will make sense, but the two plugs to the ignition switch are indexed (one goes in before the other) and are easiest to connect before the column is raised into position.

There's the crux of it. You have my number. Call anytime.

 

[DaveP's Ghost]

 

[neno74]

Dave!!

Yes, life gets in the way of hobbies sometimes and the Typhoon was unfortunately put on the back burner. I want and need to finish this project and was hoping to get a lot done this winter. I really sincerely appreciate all your help on this project. You have been an absolute asset to me and the SyTy community!

I know what you mean about assembly manuals for Corvettes because I have a set for my 71. That's why I was hoping and thinking maybe something similar was available for the Typhoon but I guess not. Your instructions and knowledge help me immensely as I was looking at all the harnesses that you sent back and was scratching my head thinking how I am I ever going to piece this thing back together? I guess my first step then is to focus on putting the dash harness into dash assembly. Once I get it going, I am hoping things will start to fall into place.

There is no doubt that I will need your guidence on this going forward so I hope you will continue to provide your expertise! Thanks again!!

Neno