Hello again oh Yodas of boating mechanisms -

Now that everything seems to be working on the Harley - I would like to not stare at the guages every second that I am boating and look around a bit. I have the Redline series of gaffrig/faria guages that light up bright red if a range is exceeded which is nice - draws attention to the right guages but no sound so if you are not looking down....poof goes engines:

Oil PSI - lower than 20 lights up
Oil Temp - highes than 250 lights up
Water temp - higher than 190 lights up

Anyone know a way to hook up a buzzer to these things (especially oil temp and water temp) for audible alarms?

Many Thanks!

Buy the alarms, they will come with the proper senders and instructions, no big deal, one sender for each system to monitor and a single alarm. 1 Power lead from ignition to alarm. 1 lead from alarm to each new sender. When there is a problem, the sender will send a ground to the buzzer and whoila, an engine monitoring alarm system.

starting to run out of places for senders ;-)

thanks - got a source for me or anywhere works?

Could you wire in the buzzer to the existing warning senders? If all the senders do is establish the ground, would that work?
I'm no electrician, so this is a question, not a suggestion...

BTW- I fed up - they are gaffrig/livorsi guages. oops.

good question handfulz - anyone confirm this????

Since they're gaffrig, I'm guessing they're sealed. So unlass there's a terminal on them for this, you're out of luck.
Try west marine. They sell oil pressure, water temp alarm kits pretty cheap.
Gary

Livorsi makes a unit (Gauge warning box) which can be hooked up to any electric analog gauge, and it supports three gauges/functions.

I have one and will be installing it at the weekend. It looks real easy.

One wire to each gauge, the other to the warning light or buzzer.
Once its hooked up, you disconnect the sender from each of the three selected gauges, and dial up (on one of the three potentiometers in the unit) the position on each gauge that you want the warning to activate at (or switch off at, whichever you choose).
Reconnect the senders, and your ready to run.

The part number is GW3GS and is priced at $139

I would always run it seperately. The last thing you want is any system feeding back to another via voltage differences and surges.. Guages run on resistance, not a hard ground like an alarm does. Go to West Marine as stated above and buy a dedicated kit for oil pressure and temp alrms. This is the right way to do it!!!!

I agree. I didn't realize the gauge is internally referenced for the warning signal; ASSumed by his statement "running out of spots for sending units", that they were seperate.
So my "question" stll stands: if you have seperate senders(switches actually), could you tap into the signal? For most that already have the Merc alarm, would you tap that signal for a warning light?