Did I fry the ignition switch?

[GrindKore]

Today I decided to finally install the tach. I tested the terminals RED(+), BLACK(GND) under the dash and they were putting out 12V DC as they should when ignition key was on, next I located the purple wire terminal and connected the signal wire to tach.

Once I have connected everything to my new tach and made sure there are no shorts (I used crimp-on terminals on my tach wires). I double checked all the wiring on the tach once more. When I turned on the key, nothing happened. I hooked up the muffs and proceeded to turn on the engine, it won't start, power trim does not work, choke solenoid does not work, the power on the terminals that I have measured is not there. I verified all battery cables are connected correctly and are getting 12V on the rectifier terminals in the motor. The circuit breaker in motor did not pop, also now when I measure the resistance between GRND and RED wire on the terminal below dash, it is 0 Oms. I took apart my Commander 2000 remote and inspected all the wires, I do not see any signs of shot circuit, melting or overheated insulation.

I'm looking at the wiring diagram and do not see any in-line fuses, any ideas as to what can be causing this? This boat was running like a champ before I went to install this tach today, now electrical if FUBARed.

 

[GrindKore]

Re: Did I fry the ignition switch?

Never-mind, there is a second circuit breaker in the motor that popped. Once I reset it, it works correctly. The problem is even when I hookup the multimeter to the RED and BLACK terminals the circuit breaker pops after about 5 seconds, this does not make any since at all. I'm starring at the wiring diagram and it should be correct , RED is positive, BLACK is ground, WTF is going on?

 

[GrindKore]

Re: Did I fry the ignition switch?

I finally got it all hooked up. The color coding is all messed up, not a single wire matched the SELOC wiring diagram. I wonder if the previous owned had replaced the wire harness.

 

[john from md]

Re: Did I fry the ignition switch?

Seloc manuals leave alot to the imagination. Buy a Clymer manual and you will be better off. Some factory engine manuals are available on ebay and they have a good schematic in them.

Regards,

John

 

[eurolarva]

Re: Did I fry the ignition switch?

It would help to know what kind of motor you have and what kind of tachometer you are attempting to hook up. If the motor is a chrysler and it is not a factory tachometer I dont think the purple wire is the correct wire to use. Most chryslers use the purple for a charge or voltmeter and some use it for a tach but it needs to be a factory one for it to work.

 

[roscoe]

Re: Did I fry the ignition switch?

wiring colors changed over the years.

 

[GrindKore]

Re: Did I fry the ignition switch?

It's a 1990 FORCE 90 power trim/tilt with US Marine Commander 2000 remote.
The SELOC book I have implies it is 1984-1999 FORCE Repair Manual, one would assume the information in there would be relevant for my motor.

 

[mreinsmith]

Re: Did I fry the ignition switch?

We had a similiar problem with the purple wire. Turned out there was a 2nd purple wire. It looked like it was coming from the wiring harness but upon further inspection is wasn't. Since the Tach was new to the boat (not an option installed originally) the sending wire had been bent over and taped up off the end of the wiring harness. Hope that can help someone.

 

[TommyA]

Re: Did I fry the ignition switch?

It's a 1990 FORCE 90 power trim/tilt with US Marine Commander 2000 remote.
The SELOC book I have implies it is 1984-1999 FORCE Repair Manual, one would assume the information in there would be relevant for my motor.

I tend to take everything I read with caution especially when it comes from a manual not entirely written for the equipment I'm working on. Most of the time I will trace the wiring out to make sure that it is for what I working on. If need be I will disconnect the wire and ground one end and ohm the other to see if is the same wire. My multimeter has a audible sound for wire checking and it is a time saver.