Sure that would really appreciated.
Just remember that it's important where you put the load resistors in this case.. the way they are in the diagram, the current coming from reverse lights switch can't get to the resistors (so they're unused for this purpose) but if you connect them after the diodes (on the bulbs side of diodes) then you'll get current going into the load resistors as well and will put way too much load on your reverse lights switch. Same thing if you would decide to put the standard bulbs back in instead of the LEDs.. all the 6 bulbs will still come on, but you're looking at 21W x 6 = 126W going thru your reverse lights switch... (your standard lowbeam headlights are only 55W x 2 = 110W) so if you're putting bulbs back in, use a relay to do the job (as on 1st pic here) so your reverse lights switch doesn't get overloaded. Also, using diodes there is approx 0.6V loss within the diode (so instead of 12V you'll get 11.4V on the bulbs) which is not enough to effect the brightness of the LED's but may slightly reduce brightness of standard bulbs... so to avoid that and to do away with the diodes altogether (while still having the same result of all 6 lights coming on in reverse) you'd need to connect them as in the 2nd pic using 4x dual throw automotive relays (or 2x dual pole-dual throw relays.. or a single relay that is 4 pole-dual throw... these are non automotive relays) you can search on ebay for "DPDT" relays or "4PDT" relays, obviously 12 or 14V ones, with the pole rating of 10-16A... Hope this helps you or anyone else wanting to do same.