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HomeTech Articles > 993 Technical Article:

Pelican Guest Technical Article
Permission to publish this article is provided generously by
Robin Sun at www.p-car.com
Be sure to visit his site for loads of 993 info!


 How to install a 5 point harness

Before you proceed to install the 5 point harness in your car please read the below important safety information regarding how the harness should be mounted......help from Wil Ferch, a contributor of this important safety information. 

Attaching the shoulder harness belts to the harness bar directly....is only advisable for keeping the driver in-place for low speed sporting events..such as SCCA Solo II competition and other types of autocross or parking lot pylon runs. For high speed sporting events, such as encountered on racetracks as part of Club Racing or Driver's Ed  ( DE) events...the shoulder harnesses  
must be anchored to something substantial...like the rear seat belt mounting points..or through holes drilled into the body with substantial backing ( or reinforcing ) plates.  Plus , the mounting points cannot impose substantial "downward" load on your body, to avoid spinal compression in an accident. For this purpose, you need a harness bar located behind the seat.  

It may be OK to wrap the shoulder harnesses around the harness bar...but ONLY if it's a low speed event like an autocross. For high speed events, as in DE's on most tracks, the harness bar ( more appropriately named a "harness guide bar" ) is used to guide the harnesses back down to a more suitable mounting point...like the rear seat belt anchors. The harness bar is  
typically *not* designed to withstand the substantial forces ( in bending) that would result... if you attach the harnesses directly to the bar.  If in doubt as the suitability of mounting the harnesses to the bar, ask the manufacturer of the bar, or the sanctioning body of your race organization.  There are commercially available bars that are not round in cross section, but are instead built like a bridge or truss, that can take the forces of direct belt attachment ( for example...those built by Brey-Krause...and perhaps others) Otherwise, for round bars used in high speed events, the routing of the harness over the bar guides the resulting  impact forces back, instead of  straight down, to avoid spinal compression. For that purpose, it  
works fine.     - racing or high speed driving is inherently dangerous. The authors of this text assume no liability with the use of the information given here..but offer it only as consideration for the more obvious pitfalls in installing  
harnesses and bars.  
 
 I installed the 5 point harness using all existing factory seat belt mounting points, no new holes was drilled for this. This is a picture of where the right side harness is mounted to on the factory seat belt anchor. 
 
This is a picture of the left side
 
 
This is a completed picture of the harness. 
 
 I didn't mount the anti submarine belts in (don't feel like drilling hole on the floor board), for what John uses for this is enough.

 How to install a harness barA harness guide bar provide a guide to your 5 point harness to rest on.  The position of the harness guide bar allows the shoulder belts to glide over the shoulders and provide a resting place for them.  It is by no means a safe mount or anchor to be used to secure the 5 point harness, unless they are specifically designed to do so. The harness bar bolts right where the factory seat belt upper anchor bolts are located at.  Just remove the factory upper anchor bolt and position the harness bar at the hole and reinstall the factory bolt.  Some people reinstall the factory seat belts back along with the harness bar, some don't.  It all depends on how you are going to be using your harness belts.  

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