93 Grumman rebuild having wiring issues

[Gilligan 2]

Ok, we started a complete rebuild on a 24 foot Grumman 1993 model over 18 months ago and got halted by work,winter spring... I have put the wiring back on the ignition switch as shown in the attached wiring diagram. here is an example of markings on the switch Typical Outboard Marine Corporation (OMC) or Bombardier Recreational Products (BRP) ignition switch terminal markings, functions, color codes, and connections will be as follows:

B	BATTERY	Red with Violet stripe	Battery positive via fuse
A or I	ACCESSORY or IGNITION	Violet	Accessory loads; engine ignition
S	START	Yellow with Red stripe	Engine starter solenoid coil
C	CHOKE	Violet with White stripe	Engine primer solenoid coil
M (raised)	MAGNETO	Black with Yellow stripe	Engine ignition kill circuit
M	MAGNETO	Black	Engine chassis or battery negative

IDENTIFIER FUNCTION WIRE COLOR CODE CONNECTS TO

We replaced all of the gauges and switches and a new boat wiring harness from pontoon specialist. Mike at Marsh brothers has been awesome!! all of the lights and the horn and ACC switches all work great. The problem is in the ign. switch. I have power to the switch and the motor turned over once or twice with everything hooked up like attached diagram except the gauges did not light and no volts to volt meter. I have the gauges wired together off of the "A" post on the switch with the purple wire to the starter solinoid hooked up. Trim controls do not work also either at motor or at console controls.I removed the purple wire to the solinoid from post "A" and the gauges lit up and the volt meter showed volts when the key was turned. this was brief and fleeting. I know the gauges are wired correct because I ran a wire straight from a battery to the gauge circuit and it worked beautiful. The motor on this boat is a 2000 Johnson 90 hp Model #J90VLSSS. I have not checked any of the voltages at solenoid or neutral safety switch but I did check voltage between A terminal and M terminal(ground) with key in run position. the result was between 3 and 5 volts. I am thinking this is a bad ign switch. any advice would be greatly appreciated.
The wires I have coming from the motor are:
Red/Purple-- Power from battery via fuse connected to "B" terminal

Yellow/Red--Comes into the console in harness goes back under boat to gearcontrol box/ neutral safety switch. then back into console and is attached to S terminal

Tan-- goes into a buzzer mounted to the console inside wall. Buzzer has tan wire in and Black ground wire out

Black/Yellow-- this wire comes out of motor harness and into a Lanyard kill switch then comes out of kill switch and is then connected to M Raised. There is a Black wire that also runs out of the lanyard kill switch I had it connected to ground "M" terminal.

Purple/White --Attached to "C" terminal

Black-- Attached to "M " terminal. I also have a wiring harness connected to the "M" terminal on the Ign switch to use as ground for gauges

Purple-- The purple wire is attached to the "A" or "I" Terminal. I also have a wiring harness attached to that terminal as switched power source for gauges and gauge lights. some gauges like Tach, Volt have two wires on circuit attached. ie: tach has send which is gray, Ign which is on "A" circuit and Light also on "A" circuit

Gray-- Goes to tach as send

Also there is a wire harness for the Fuel gauge it has green, black, and white wire. Black went to I White went to Send. Green I am told is a static guard to be used if the fuel fill is metal mine is plastic and rubber.

 

[Silvertip]

The purple wire you said going to the solenoid does not belong on the "A" terminal. The term "Ignition" in your chart means this is a POSITIVE voltage applied to an engine ignition system. The starter solenoid is NOT the engine ignition system. It is part of the starter system. Your outboard does not have an ignition system that requires 12 volts because it is a magneto system. Inboards and I/O power plants have "battery" ignition systems that require a constant +12 volts. Only the gauges should be powered from the "A" terminal. The "S" terminal is what activates the starter solenoid.