Yanmar 6LPA after market alarm panel

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rgano

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Joined
Oct 8, 2007
Messages
5,137
Location
Panama City area
Vessel Name
FROLIC
Vessel Make
Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
Sometime ago I posted about an alarm silence switch I installed on my boat showing a photo of the switch alongside the Seaward after market alarm panel I had previously installed. I thought I had given details of the installation but cannot find same here. So here they are.

This boat came with no alarm indicator lights for any of the six different alarm switches on its Yanmar 6LPA-STP 315 HP engine. Mainship required Yanmar to wire them up to a single piezo-electric buzzer leaving the operator only the oil pressure and the coolant temperature gauges to look to for clues when the buzzer sounded. Mainship should have used the Yanmar engine panel which has all the "idiot lights." as well as more extensive instrumentation.

Sooo, I found the pictured Seaward light panel on eBay and installed it. Because there was no harness and coupler on the boat matching the Seaward panel, and access to wherever the alarm wires go on the boat is impossible, I was obliged to run the individual alarm switch wires from the aft end of the engine up to the helm console.

With a wiring diagram of the engine in hand, I was able to find the color-coded wires of the alarms at the aft end on the engine where they entered a pair of couplers. I did not want to disturb the existing set up; I only wanted to add the function of a discrete indicator light for each alarm.

I simply "teed" into each alarm wire and placed a diode in the wires leading to the buzzer from the tee so that one alarm grounding out would not light all six lights.

I have a simplified Excel wiring diagram for interested parties.
 

Attachments

  • DSC00726.jpg
    DSC00726.jpg
    82.9 KB · Views: 240
Temp.
 
Nice work! Can you share your XCL file?
 
Here it is as a .pdf
 

Attachments

  • Mainship 30PII Engine alarms.pdf
    311.8 KB · Views: 146
Sometime ago I posted about an alarm silence switch I installed on my boat showing a photo of the switch alongside the Seaward after market alarm panel I had previously installed. I thought I had given details of the installation but cannot find same here. So here they are.

This boat came with no alarm indicator lights for any of the six different alarm switches on its Yanmar 6LPA-STP 315 HP engine. Mainship required Yanmar to wire them up to a single piezo-electric buzzer leaving the operator only the oil pressure and the coolant temperature gauges to look to for clues when the buzzer sounded. Mainship should have used the Yanmar engine panel which has all the "idiot lights." as well as more extensive instrumentation.

Sooo, I found the pictured Seaward light panel on eBay and installed it. Because there was no harness and coupler on the boat matching the Seaward panel, and access to wherever the alarm wires go on the boat is impossible, I was obliged to run the individual alarm switch wires from the aft end of the engine up to the helm console.

With a wiring diagram of the engine in hand, I was able to find the color-coded wires of the alarms at the aft end on the engine where they entered a pair of couplers. I did not want to disturb the existing set up; I only wanted to add the function of a discrete indicator light for each alarm.

I simply "teed" into each alarm wire and placed a diode in the wires leading to the buzzer from the tee so that one alarm grounding out would not light all six lights.

I have a simplified Excel wiring diagram for interested parties.
Hi rgano!
You told for very long time ago that you had wiring diagram for the alarm panel for Yanmar 6 LYA-STP. Do still have it.
You see I have the panel and would be interested in the diagram.
I know the time diff. but still asking if its possibly for you to send it.
I don’t know what boat you have today but I have made up a diagram over the drain and alarm system for the Mainship 400 if you are interested.
Please tell me what contact you need from me!
boan400
 
Boan400, see the personal message I just sent to you.
 
Great info Rich! Thanks!
 
I mailed your ticket....you didn't get it?? :cool:
 
Mail can be a bit slow here, I'll check again tomorrow. :unsure:
 
Good morning from Ohio! My daughter and I have researched extensively and cannot find a diagram. Are you willing to send yours to me?

Many thanks!!
Can you open the attachment above at post number 5? That is my home-grown drawing of how I tee'd into the existing engine alarm wiring at the back of the engine. To find the correct engine alarm wire to connect to, I used page 58, I think, of the Yanmar engine operation manual to figure out which color-coded wire was which alarm, and I have included the manual here. On my engine these wires are all together (along with other wires) and accessible in a bundle at aft end of the engine. I unwrapped the bundle to gain access. Given the chance that I might be inadvertently disabling an alarm, I chose to tee into each one rather than cut the wire and reroute it to the alarm panel which meant the original buzzer and the buzzer attached to the new alarm panel would both sound. The diodes in my home-grown drawing were required to avoid all of the lights on the panel lighting when any one of the alarm switches on the engine went off.
 

Attachments

  • Yanmar 6LPA-STP - Operation Manual_49961-205771.pdf
    2.6 MB · Views: 18

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