Thanks for replying.
To clarify, Ill now call glow Plug 5 closest to the radiator and gp 1 closest to firewall.
I didnt get the Bosch kit, I got the new plugs from dieselgiant.com, Russel is a really friendly guy. He sent 10 gauge connecting wires also.
I agree the plugs should work in theory, and I can get them to work if i trick the sensor into working. This is how I do it.
With all of the new glow plugs connected, the glow plug indicator light wont come on. If i disconnect gp 5 then the indicator will come on, and will heat the first four plugs. While their heating I can then connect gp 5 and all 5 get hot, and the car cranks without a hitch! I attribute this to heating elements requiring less amps as they heat, I could be wrong. Problems is, my sensor wont feed 5 plugs at first.
My other problem is, with the factory wiring (series) there was a wire that went from gp5 to a sensor in the block. Now that ive upgraded to gps in parallel, Do I attach this wire back to gp 5?
Factory wiring starts with a 12volt positive to gp1, neg to gp2, pos to gp3, neg to gp4, pos to gp5. This would make the wire going to the sensor positive.
My upgrade to parellel gives a positive to gp5!
But connecting it doesnt fix my problem.