What is positive and negative on ignition coil for a suzuki gsxr 750 1992

DO YOU HAVE POWER TO THE IGNITION COIL?

The positive lead in the one going into the coil .
The negative is the one grounded or shown bare on the outside of the coil.

check the coil the low side of it may have blown . get a spark plug tester to check it.

hi chotzzz; welcome to the forum! if u want urgent pls go through the ebay... http://cgi.ebay.co.uk/SUZUKI-GSXR-400-R-GK71-IGNITION-PICK-UP-COILS-1984-/380216469092

Hi and welcome to FixYa,

Almost always on Suzuki 4 cylinders, the left (when seated) igntion coil supplies cylinders 1 & 4 while the right ignition coil supples 2 & 3.

Good luck and thank you for asking FixYa.

I've this data from my 1986 engine!

Under the left hand side cover there are 2 2-wire connections. One with a green and a black wire, one with a blue and a yellow wire.
Use an ohmmeter at R x 100 between both wires of a connector to check the pick-up coils: resistance must be between 130 and 180 Ohms.

The values of the ignition coil resistances are:
primary coil : 3-5ohms ( set ohmmeter at R x 1 )
Secundary coil : 25.000 - 45.000 ohms ( set ohmmeter at R x 1.000 )
For a correct measurement ALL leads must be disconnected ( also the spark plug leads )

The CDI cannot be tested with a simple measurement. Suzuki dealers have a special tool to test CDI boxes.
But checking the pick-up coils and ignition coils good will indicate an defective CDI.

The wires on the CDI:
Blue: PU coil 1 ( cyl 1-4 )
Yellow: PU coil 1
Green: PU coil 2 ( cyl 2-3 )
Blue : PU coil 2
Orange/white : +12v ign coil 1-4
White : switched coil negative side ign coil 1-4
Orange/white : +12v ign coil 2-3
Blue/yellow: switched coil negative side ign coil 1-4 ( and signal to tachometer )
Blue/white : ground

Thus, you must have +12V on both Orange/white leads.