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Author Topic:   170 Montauk Electrical Power Distribution

Sixer posted 08-09-2011 07:45 PM ET (US)
Would anyone happen to know if the 12V accessory receptacle on a 2007 [Boston Whaler 170 MONTAUK boat] is a constant live circuit? Or is it controlled by the ignition switch? Thanks.
Chuck Tribolet posted 08-09-2011 11:32 PM ET (US)
A third option is controlled by the accessory switch. My
'97ish Montauk was originally that way. I rewired it so
that it was still on the accessory circuit, but before the
switch, and therefore always hot.

Chuck
GreatBayNH posted 08-10-2011 08:54 PM ET (US)
My 2006 Montauk is out in the driveway. I can answer this question in two shakes. Be right back!
GreatBayNH posted 08-10-2011 08:59 PM ET (US)
And the answer is...constant live circuit. For the 2006 model year Boston Whaler Montauk 170 anyway. I doubt they changed the wiring for the next model year.
-Seth
Sixer posted 08-10-2011 10:05 PM ET (US)
Thanks Seth. I am thinking of getting a solar maintainer charger that runs thru the 12 volt, but it has to be hot all the time for it to work.
chuck21401 posted 08-11-2011 12:11 PM ET (US)
>>> I am thinking of getting a solar maintainer charger that runs thru the 12 volt, but it has to be hot all the time for it to work.
I've seen those solar chargers. I would be concerned about "cooking" the battery (or worse) if it didn't have a charge controller. And I've read the smaller ones don't need a charge controller...but how much faith should one place in cheap electronics.
Sixer posted 08-11-2011 07:09 PM ET (US)
I have been using them on the classic cars I restore. The well designed units have overcharge/discharge protection. If the unit you use does not have the feature, a controller is easy to add. They are perfect for a boat application.
GreatBayNH posted 08-12-2011 11:00 AM ET (US)
Funny. I was just reading about these in the 2001 West Marine catalog. They outline which solar chargers they offer have built in overcharge/discharge protection and which will need the addition of a overcharge/discharge protection unit.
-Seth
GreatBayNH posted 08-12-2011 11:01 AM ET (US)
2011 West marine Catalog that is. :-)
Sixer posted 08-12-2011 07:09 PM ET (US)
If you are shopping, be cautious over which one you select, as that manufacturer labels some as weatherproof, but they are not. Check their web site for each model and review the FAQ for the model.
http://www.sunforceproducts.com/results.php?CAT_ID=1
jimh posted 08-13-2011 09:03 AM ET (US)
It would be unlikely that the current supplied to a cigar lighter plug would be provided from the IGNITION circuit of an outboard engine on the boat. Usually the IGNITION circuit of the outboard engine is fused for low current, perhaps 5-Amperes. The IGNITION circuit of the outboard engine is intended to operate devices like gauges. A cigar lighter plug is probably fused at at least 10-Amperes and perhaps more.
The wiring of recently made Boston Whaler boats is typically available in the schematic diagram form from the website WHALERPARTS.COM.
jimh posted 08-13-2011 09:06 AM ET (US)
It took only about three clicks on WHALERPARTS.COM to find the wiring diagram for your 2007 Boston Whaler 170 MONTAUK. The diagram clearly shows the wiring of the accessory power outlet.
Here is a link directly to the diagram:
http://whalerparts.com/Diagrams/2007/170%20Montauk/0740117MTKSHT1.pdf
jimh posted 08-13-2011 09:08 AM ET (US)
As I speculated, the wiring diagram shows that the branch circuit feeding the accessory power outlet is not related to the outboard engine IGNITION circuit, and the power feed is fused at 10-Amperes.
Sixer posted 08-13-2011 08:29 PM ET (US)
Thanks Jim, Seth already provided the info I needed.
jimh posted 08-14-2011 08:56 AM ET (US)
Perhaps the information I provided will be useful to others. It seems many readers are not aware of how to obtain the schematic diagram of their recently-made Boston Whaler boats.
GreatBayNH posted 08-17-2011 04:42 PM ET (US)
It seems many readers are not aware that the diagram of their recently-made Boston Whaler may not be followed accurately by the employees on the factory floor. My bow navigation lamp had to be re-wired, post delivery from factory, for it to operate correctly and consistantly.
"doveryai, no proveryai"
-Seth
Tom Hemphill posted 08-17-2011 07:31 PM ET (US)
This one I had to look up:

quote:

doveryai, no proveryai

Apparently it means "trust but verify." Sound advise in just about any context.
number9 posted 08-18-2011 03:59 AM ET (US)
Perhaps this topic should be moved to Small Boat Electrical so that the information about diagram availability is easier to find.

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Author	Topic: 170 Montauk Electrical Power Distribution
Sixer	posted 08-09-2011 07:45 PM ET (US) Would anyone happen to know if the 12V accessory receptacle on a 2007 [Boston Whaler 170 MONTAUK boat] is a constant live circuit? Or is it controlled by the ignition switch? Thanks.
Chuck Tribolet	posted 08-09-2011 11:32 PM ET (US) A third option is controlled by the accessory switch. My '97ish Montauk was originally that way. I rewired it so that it was still on the accessory circuit, but before the switch, and therefore always hot. Chuck
GreatBayNH	posted 08-10-2011 08:54 PM ET (US) My 2006 Montauk is out in the driveway. I can answer this question in two shakes. Be right back!
GreatBayNH	posted 08-10-2011 08:59 PM ET (US) And the answer is...constant live circuit. For the 2006 model year Boston Whaler Montauk 170 anyway. I doubt they changed the wiring for the next model year. -Seth
Sixer	posted 08-10-2011 10:05 PM ET (US) Thanks Seth. I am thinking of getting a solar maintainer charger that runs thru the 12 volt, but it has to be hot all the time for it to work.
chuck21401	posted 08-11-2011 12:11 PM ET (US) >>> I am thinking of getting a solar maintainer charger that runs thru the 12 volt, but it has to be hot all the time for it to work. I've seen those solar chargers. I would be concerned about "cooking" the battery (or worse) if it didn't have a charge controller. And I've read the smaller ones don't need a charge controller...but how much faith should one place in cheap electronics.
Sixer	posted 08-11-2011 07:09 PM ET (US) I have been using them on the classic cars I restore. The well designed units have overcharge/discharge protection. If the unit you use does not have the feature, a controller is easy to add. They are perfect for a boat application.
GreatBayNH	posted 08-12-2011 11:00 AM ET (US) Funny. I was just reading about these in the 2001 West Marine catalog. They outline which solar chargers they offer have built in overcharge/discharge protection and which will need the addition of a overcharge/discharge protection unit. -Seth
GreatBayNH	posted 08-12-2011 11:01 AM ET (US) 2011 West marine Catalog that is. :-)
Sixer	posted 08-12-2011 07:09 PM ET (US) If you are shopping, be cautious over which one you select, as that manufacturer labels some as weatherproof, but they are not. Check their web site for each model and review the FAQ for the model. http://www.sunforceproducts.com/results.php?CAT_ID=1
jimh	posted 08-13-2011 09:03 AM ET (US) It would be unlikely that the current supplied to a cigar lighter plug would be provided from the IGNITION circuit of an outboard engine on the boat. Usually the IGNITION circuit of the outboard engine is fused for low current, perhaps 5-Amperes. The IGNITION circuit of the outboard engine is intended to operate devices like gauges. A cigar lighter plug is probably fused at at least 10-Amperes and perhaps more. The wiring of recently made Boston Whaler boats is typically available in the schematic diagram form from the website WHALERPARTS.COM.
jimh	posted 08-13-2011 09:06 AM ET (US) It took only about three clicks on WHALERPARTS.COM to find the wiring diagram for your 2007 Boston Whaler 170 MONTAUK. The diagram clearly shows the wiring of the accessory power outlet. Here is a link directly to the diagram: http://whalerparts.com/Diagrams/2007/170%20Montauk/0740117MTKSHT1.pdf
jimh	posted 08-13-2011 09:08 AM ET (US) As I speculated, the wiring diagram shows that the branch circuit feeding the accessory power outlet is not related to the outboard engine IGNITION circuit, and the power feed is fused at 10-Amperes.
Sixer	posted 08-13-2011 08:29 PM ET (US) Thanks Jim, Seth already provided the info I needed.
jimh	posted 08-14-2011 08:56 AM ET (US) Perhaps the information I provided will be useful to others. It seems many readers are not aware of how to obtain the schematic diagram of their recently-made Boston Whaler boats.
GreatBayNH	posted 08-17-2011 04:42 PM ET (US) It seems many readers are not aware that the diagram of their recently-made Boston Whaler may not be followed accurately by the employees on the factory floor. My bow navigation lamp had to be re-wired, post delivery from factory, for it to operate correctly and consistantly. "doveryai, no proveryai" -Seth
Tom Hemphill	posted 08-17-2011 07:31 PM ET (US) This one I had to look up: quote: doveryai, no proveryai Apparently it means "trust but verify." Sound advise in just about any context.
number9	posted 08-18-2011 03:59 AM ET (US) Perhaps this topic should be moved to Small Boat Electrical so that the information about diagram availability is easier to find.