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Old 27-12-2015, 12:00   #1
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Join Date: Mar 2015
Location: Detroit
Boat: 2000 Jeanneau, 45.2
Posts: 61
Adding oil and temperature senders to 4JH3-TE

Hello all. I have a 4JH3-TE (75 HP turbo) in my 2000 Jeanneau 45.2. It has the "B" instrument panel which only has warning lights / buzzer alarm for high water temp and low oil pressure. I want to add gauges for the water temp and oil pressure. I realize the current set up uses open/closed switches to activate the alarm circuits so that I need to add variable resistance sensors (240/33 ohm). I have two questions:

(1) did Yanmar / Jeanneau use the same wire harness for the "B" and "C" instrument panels. Reason I ask is that the "C" panel includes both alarms and gauges for oil and water ... so that would mean my wiring harness would have the 2 spare wires already present. I do not want to simply swap my switches for senders ... the audible alarm is a "must have" IMHO since one is not constantly monitoring the gauges

(2) does the 2000 4JH3-TE engine block have separate locations for the senders and switches ... in other words will I find a spare oil pressure fitting and spare water temperature fitting in the engine block to install the senders? While a "tee" from the existing oil pressure switch may be OK to feed the oil pressure sender, I suspect that the water temperature sender needs to be directly in the water flow and therefore must be installed in a dedicated engine block fitting?

Pictures showing the locations where these spare engine block fittings are located would be very cool !!
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