SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: 1sttankbn on July 01, 2013, 06:24:17 AM

Title: Motorola 12 V 37 Amp 2 Wire alternator help
Post by: 1sttankbn on July 01, 2013, 06:24:17 AM

I have a 460 Ford running a 2 wire Motorola 37 A model # MR12N451D that is only running on about 10 volts on the gauge.  I pulled it off and took it to have it test at 2 places and neither (pep boys or O'Reilly) place could do it.  Is there a easy switch from this 2 wire system to a 1 wire or should I purchase a new one or have this one rebuilt.  Any help would be greatly appreciated!   

Title: Re: Motorola 12 V 37 Amp 2 Wire alternator help
Post by: tunnels on July 01, 2013, 07:55:31 AM

did u use a volt meter and test the alternator on the boat. if u have a weak cell in the battery it will read low on the guage. if it is the alternator rebuild it yourself. the parts are available at napa or carquest.

Title: Re: Motorola 12 V 37 Amp 2 Wire alternator help
Post by: 1sttankbn on July 02, 2013, 09:34:10 AM

No I pulled the alternator and battery off the boat. Battery tested perfect so I'm rebuilding th Motorola

Sent from my ZTE N9120 using SoCalJetBoats mobile app

Title: Re: Motorola 12 V 37 Amp 2 Wire alternator help
Post by: ka0tyk on July 02, 2013, 09:37:11 AM

i have a motorola 2 wire that worked when i replaced it with my 100+ amp (running dual batteries and a stereo now).  swing by and pick it up.  id rather someone used it than throwing it in the trash. 

Title: Re: Motorola 12 V 37 Amp 2 Wire alternator help
Post by: 1sttankbn on July 02, 2013, 10:09:09 AM

That souls be awesome PM and let me know where to come get it!

Sent from my ZTE N9120 using SoCalJetBoats mobile app