JeffM Posted October 12, 2017 Share Posted October 12, 2017 How can I tell what alternator I have? The 1974 engine was rebuilt recently but I don't know if the builder upgraded it as part of the rebuild. I'm planning to add driving lights and some other stuff (Recaro C power seats). Any help is appreciated. Quote Link to comment Share on other sites More sharing options...
Mark92131 Posted October 12, 2017 Share Posted October 12, 2017 Pictures would help. Does it have the stock plastic connector in the back? Mark92131 Quote Link to comment Share on other sites More sharing options...
JeffM Posted October 12, 2017 Author Share Posted October 12, 2017 Here's what I have now... Quote Link to comment Share on other sites More sharing options...
Simeon Posted October 13, 2017 Share Posted October 13, 2017 Looks stock to me. Quote Link to comment Share on other sites More sharing options...
TobyB Posted October 13, 2017 Share Posted October 13, 2017 me too. t Quote Link to comment Share on other sites More sharing options...
Mark92131 Posted October 13, 2017 Share Posted October 13, 2017 Here's a stock one, if yours has the same 3 prong connector in the back, it is most likely a stock 45 amp alternator. Mark92131 Quote Link to comment Share on other sites More sharing options...
Mike Self Posted October 14, 2017 Share Posted October 14, 2017 JeffM--please get a rubber boot to cover that large red wire that fastens to a nut/bolt terminal on the back side of your alternator. That sucker is live all the time and carries a lot of current. First time you go to remove your oil filter or get a tool near it for any other reason, you're gonna see a shower of sparks when you ground that terminal. If you can't find the proper rubber boot anywhere else, Snapper (and probably other lawn mower brands) use 'em on their riding mowers. And they look just like the BMW item (ask me how I know this) mike 1 Quote Link to comment Share on other sites More sharing options...
JeffM Posted October 14, 2017 Author Share Posted October 14, 2017 Thanks Mike - Good advice, already toasted myself on it once! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.