how to test thremoswitch

[haymon15]

I have recently replaced the thremoswitch and horn but cant get the horn to work. I have the horn wired to the orange wire coming from the control box and the horned is also grounded to the battery.
thanks
ken

 

[wickware]

Re: how to test thremoswitch

I found this info related to my horn & Thermostat switch problem. About mid way the info at the address below or run a search on wickware.

My horn?s ground is coming from the switch (if I?m not confused, the orange wire). If I ground the orange wire at the switch to the engine (as over heating will do) with my stitch on, my horn will sound. My horn will also sound if I press my horn button, which grounds the horn.

http://forums.iboats.com/showthread.php?t=378806&highlight=wickware

Good Luck!
JOW

Re: I fired-up my 1970 Chrysler 35HP for 2010 check-up with concerns.

Today?s Follow-up:

1970 Chrysler 35 HP. Is it common for the horn to serve as the horn and over-heating alarm? Today, I discovered a bad/fried 6v horn in a 12v system. With the new 12v horn, the horn works and grounding the thermostat?s connection sounds the horn. When overheating the thermostat circuit works as a ground to the horn. I ran the engine 5 minutes (in the barrel) and the horn d/n sound. Plus I could hold my hand on the engine?s cylinder area or head but I w/n want to leave it constantly over a minute or so. Does that sound about right for the combustion area surface temp?

I found a name and number locally for the cracked carb linkage. Listed as a Mercury part, Ball Socket Kit, # 828514A1 (11.50), which would save shipping. It showed that the fiber connector snaps onto the brass stud/ball. Which means I hope to find the fiber section only or a used kit at half price. I have compressed the crack with a hose clamp and I d/n see any danger if it breaks (idle home or accelerate manually). Is that cheap, economics or what (when who knows if I?ll make a fishing trip or 100 trips)?

JOW

 

[john from md]

Re: how to test thremoswitch

Thermoswitches for early Force engines are hard to come by. To test it, ground the orange wire with the key on. If the buzzer under the dash does not come on, you need to troubleshoot to see if the buzzer is bad or the wiring is bad. The easiest way to test the buzzer is to put a 9v battery accross the terminals. If it works, then you have to find the bad wire.



John

 

[haymon15]

Re: how to test thremoswitch

Im not sure if i have my horn wired in right? It is hooked up to the orange wire that goes to the control box and the other wire coming from the horn to the negative post on the battery. When i try to ground out the horn it will not make a sound but if i hook up the horn to battery it will go off. Where have i gone wrong or what should i look at next?
thanks
Ken

 

[john from md]

Re: how to test thremoswitch

I am not at home so I don't have my manuals available. When the key is on, and you ground the orange wire on the thermoswitch, the buzzer should activate. The thermoswitch provides a ground for the buzzer. The power for the buzzer comes from the ignition switch which is why grounding the orange wire with the switch in the off position does not activate the buzzer.

When I get home I will look up the schematic.

John

 

[john from md]

Re: how to test thremoswitch

My schematic shows the horn is connected to the terminal strip under the dash and that one wire goes to orange and the other goes to blue. The orange from the terminal strip goes to the overheat detector and the blue goes to the cd Unit.

Regards,

John