constant alarm 200 xri

[Jdwelding]

Long story short, I have a 1995 200xri ( serial number 0G104371) with new controls, rigged the motor after my Johnson 150 blew 10 years ago and its been sitting. I put in new thermostats, fuel lines, fuel filters, and fuel pump. I also deleted oil injection and black boxes. I took to mechanic to finish up since I'm self employed and have been slammed. He did water pump rebuild, new impellor, new overheat sensors and hung jack plate. Sent me a video of it running. I took it out today a few weeks later, as soon as key is in the on position I get overheat alarm. Its on constantly. Only goes off when key is off. Obviously motor is not overheating and there's a short somewhere. I have brand new controls, and remote key switch/wiring. Where should I start. Didn't have this problem at mechanics. He sent a video of it running, and fired it up when I picked it up.

[JOE54]

disconnect stbd sensor , likely you have a bad warning module

[Jdwelding]

I started by disconnecting the sensi, still key on horn sounds.
I pulled the wires out from under the dash and found the Tan wire coming from the motor connected to the Tan/Blue wire. Obviously this wasn't right. Disconnected them, and no horn, but shouldn't it beep on start? And where do the tan and tan/blue wires go? I think Tan is for a temp gage. Tan/Blue reads 12v when key is on.

[JOE54]

tan is for gage t/b comes from module to horn

[Jdwelding]

tan is for gage t/b comes from module to horn

There's a tan/blue and purple going into horn. The not connected tan/blue is coming from key switch and has 12v, when key is on

[JOE54]

disconnect t/b wire at connection on mtr from module, not supose to have 12v on tan /blue

[Jdwelding]

disconnect t/b wire at connection on mtr from module, not supose to have 12v on tan /blue

ok, then what? Where does the Blue Tan wire from key switch go? I"d like to get this alarm working correctly.

[JOE54]

goes to horn purple on one side t/b on other,if you still have voltage on t/b with wire disconnected gota short some where

[Jdwelding]

goes to horn purple on one side t/b on other,if you still have voltage on t/b with wire disconnected gota short some where

The horn has, a purple, and Tan/Blue going into it. There is another Tan/Blue lead coming out of the key switch harness, along with the tach wire, and others. I need to know where this goes. I uploaded a pic.

[JOE54]

that wire can be used for a warning light to be installed along with horn

[Jdwelding]

Ok, thank you. So why doesn't my horn beep on startup? And why 12 volts to it? I can make the alarm sound by grounding out the btan/blue wire.

[leonreno]

The sensors set off the Horn by modulataing the ground. The Horn has a constant +12v and lets say the overheat alarm goes off the sensor connects -12v (ground) to the Horn to complete the circuit and activate the Horn.

[Jdwelding]

So it has nothing to do with me removing the low oil warning module?

[leonreno]

It may, some models, when you remove the oil module it removes the start up beep, but I do not know for sure if that’s your case, joe or don will know.

[JOE54]

when you remove the module will have no horn at keep on

[Jdwelding]

when you remove the module will have no horn at keep on

Ohhhh, I put in my first post, I took all the black boxes out, when I took out the oil injection. So hook it back up, and only use the purple, black, and tan/blue wires? This makes sense now.