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`nigno
Decided to Install some 4 point harnesses into my skyrice on the weekend, thought I'd do a bit of a tech writeup even though its a basic process.

Tools:
Ratchet + Socket Set, Spanners.

Step 1: Remove OEM Seatbelts.
Pop the cap off your OEM Belt up the the top and use a ratchet + socket, open ended spanner, shifter... whatever, to take the bolt out. Then fold your seat right forward and attack the bottom. In my case this was a little difficult due to the positioning of a roll cage, so we quickly undid the cage... then removed the belt and replaced the cage into position.

The only possible drama you will have is when removing the OEM buckle slot (little bit you press to release your belt, and the bit the buckle slots into). Most new cars have a sensor hooked up to them, to let you know when your seatbelt isnt connected. Its a simple case of unplugging it from the loom when you remove it. How you deal with the dash light is your problem tongue.gif Having a custom dash it doesnt matter much to me... A simple solution would be to pull your dash out and remove the globe if it really pisses you off that much.

user posted image

Step 2: Choose your mounting points.
When choosing mounting points for harnesses there is a fairly striaght forward rule you need to follow. From the point where your rear straps come through your head rest, the mounting point must be mounted within the constraints of:

user posted image
(all bow to my l337 paint skills)

So somewhere in between 10 degrees and 45 degrees.
Initially we were going to use the roll cage as our anchor point, but it was not central enough. So we opted to use two good sized bolts where the rear seat used to be which were perfectly centered on each side.

user posted image

The side mounts were a little easier, and pretty self explanatory, theres only really one good strong point to strap these suckers too on either side of the seat, as photographed.

user posted image

Step 3: Bolting it all in.
Once you have selected your mounting points, start with the side straps (making sure you have them facing the right way up) bolting them firmly into position. Make sure the metal mounting point on the strap follows the direction of the belt and it doesn't double over itself or the bracket.

Once thats done move onto the rear mounts, making sure that your harness isnt twisted or folded in any way. Once again the mounting brackets should follow the direction of the belt.

Step 4: Adjusting.
Finally adjust your harnesses to suit. Start with the side straps, adjust until they are firm but not super tight, u should be able to get a thumb in between the harness and your body, but still have it feeling firm. Then get a mate to help you with the rear straps. The best way is to take up all the slack with your hands and feed it through the headrest, holding onto the point where you feel comfortable with the harness. Then have your friend take up the slack from the back seat. Again firm, but not ridiculously tight.

And thats it your done, 4 easy steps.

Will add more pictures tonight of the finished installation and mounting points, I turned the flash on halfway through this little project, and all the pictures turned out to be ridiculously bright and useless once resized hehehe so sorry about that. Will have more pics up asap which should make it even easier to understand smile.gif
`nigno
Updated Pics:

user posted image
Central Rear Mounting Position (where rear seats used to be)
Note how the buckle follows the direction of the strap smile.gif

user posted image
Other Rear Mounting Position (tyre well)

(Note, dont criss cross your straps, left is just offset to the left side, right to slightly right)

user posted image
Side Mounting Position (bit cramped, beside the seat)

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Harness on seat
IRB20
Nice, will be doing the same thing very shortly biggrin.gif

Thanks
04ETA
Have you done away with the original belts altogether?

Great job. Looks good.
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