Ash.Witty Posted April 21, 2013 Share Posted April 21, 2013 Hi all, I have chosen a td5 alternator for my twin setup as it has a vacuum pump built inand is rated to 120 amps, I have it mounted to my engine but I'm trying to find out what wire goes where into the 3 pin connector on the rear. Any help will be greatly received Ash Quote Link to comment Share on other sites More sharing options...
western Posted April 22, 2013 Share Posted April 22, 2013 td5 alternator is a battery sense type, it might not work on a non td5 vehicle. whereas all previous vehicles have a machine sensed alternator what engine are you fitting it too ? Quote Link to comment Share on other sites More sharing options...
Ash.Witty Posted April 22, 2013 Author Share Posted April 22, 2013 It's fitted onto my 5.9 Cummins 110 mainly for the built in vacuum pump but also a bit of extra charging capacity. I have two starting batteries and plan to fit a leisure battery or an optima yellow top for winching and for powering lights etc. When camping. I have read that a battery monitoring system can control these types of alternator but will have to look into it a bit further. I was thinking of using a 150A p38 alternator as well for the main one which I would presume will also be battery sensed? I do quite bit of off roading and a few pay and play days and eventually want to fit two 8274 winches to be able rescue myself if I get into problems as the Cummins weighs just over 500Kg roughly 300kg more than the v8 it replaced so am going to need some pulling power. I just don't want to get the control wires wrong and frazzle it and render it useless. Quote Link to comment Share on other sites More sharing options...
PaulMc Posted April 22, 2013 Share Posted April 22, 2013 Only 2 of the 3-ways in the connector are used. Pin 1 - Charge warning light - Brown/Yellow Pin 2 - Ignition-switched live - White/Green (Discovery II) / Green/Yellow (Defender) Pin 3 - Not used The pin numbering in the connector is - The above diagram is of the connector 'face' or front, the cables are inserted from the other side. I can supply a new connector with terminals and wire seals. If you need one, drop me a PM. . Quote Link to comment Share on other sites More sharing options...
western Posted April 22, 2013 Share Posted April 22, 2013 2nd gen RR [p38] use a Bosch NC90/150 alternator on '99 model year on V8 models, it doesn't say if it's a machine or battery sensed version. Quote Link to comment Share on other sites More sharing options...
Ash.Witty Posted April 22, 2013 Author Share Posted April 22, 2013 Thanks for the diagram Paul, I will need one and will pm you shortly. I will do a bit of research on the p38 type, am I right In thinking that I would have to make sure it was battery sensed like the td5 one so they wont conflict with each other or can they be mixed? Quote Link to comment Share on other sites More sharing options...
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