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+--- Thread: WTB W123 Alternator harness, (later '84-'85) (/showthread.php?tid=4866)
WTB W123 Alternator harness, (later '84-'85) - Austincarnut - 09-02-2013
my alternator harness cooked itself and I don't have time to look around, does anyone have one up for grabs?
Please send pics as there are several styles...
RE: WTB W123 Alternator harness, (later '84-'85) - SurfRodder - 09-03-2013
Honestly your best bet is to make one with new, higher gage wire. One fat one to replace the two dinky ones M-B used that were barely enough to get the job done 30 years ago (I like to use 4 gage for that one). The other wire is just there to "tickle" the field and basically any 12v switched source should work. Trace the wire that's attaches with the push on/pull off plug connector and tap into it and run new wire as far as you feel like you need to. Not too much current on that one (field) so wouldn't worry about it too much. I also like to run a 4ga ground cable up to where the battery attaches ground to chassis and the other end as close to the alternator on the block as you can, usually do this to any car Ithink has a ground issue and most of the time it cures the problem.
RE: WTB W123 Alternator harness, (later '84-'85) - Austincarnut - 09-03-2013
(09-03-2013, 01:38 AM)SurfRodder Honestly your best bet is to make one with new, higher gage wire. One fat one to replace the two dinky ones M-B used that were barely enough to get the job done 30 years ago (I like to use 4 gage for that one). The other wire is just there to "tickle" the field and basically any 12v switched source should work. Trace the wire that's attaches with the push on/pull off plug connector and tap into it and run new wire as far as you feel like you need to. Not too much current on that one (field) so wouldn't worry about it too much. I also like to run a 4ga ground cable up to where the battery attaches ground to chassis and the other end as close to the alternator on the block as you can, usually do this to any car Ithink has a ground issue and most of the time it cures the problem.
Yeah, I think I'm going to make one. 10 more min of work...
RE: WTB W123 Alternator harness, (later '84-'85) - SurfRodder - 09-04-2013
(09-03-2013, 08:53 PM)AustincarnutYeah, it's super easy...PM me with your phone # if you need help and Ill do my best (may have to go look at the 123 to verify if necessary)(09-03-2013, 01:38 AM)SurfRodder Honestly your best bet is to make one with new, higher gage wire. One fat one to replace the two dinky ones M-B used that were barely enough to get the job done 30 years ago (I like to use 4 gage for that one). The other wire is just there to "tickle" the field and basically any 12v switched source should work. Trace the wire that's attaches with the push on/pull off plug connector and tap into it and run new wire as far as you feel like you need to. Not too much current on that one (field) so wouldn't worry about it too much. I also like to run a 4ga ground cable up to where the battery attaches ground to chassis and the other end as close to the alternator on the block as you can, usually do this to any car Ithink has a ground issue and most of the time it cures the problem.
Yeah, I think I'm going to make one. 10 more min of work...
RE: WTB W123 Alternator harness, (later '84-'85) - Captain America - 09-05-2013
I have an '85 at my house but yes just make one, youll be much better off