Author Topic: Added new Bosch SR59X to my 230SL  (Read 1725 times)

McBenz

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Added new Bosch SR59X to my 230SL
« on: September 06, 2020, 17:49:09 »
I just replaced my old starter with a new/reman Bosch SR59X. I haven't hooked up the wiring to my also new Bosch Alternator (with internal regulator). I was wondering why the new SR59X (see picture) had additional terminals at the end of the starter. My old one did not have any terminals on the back end of the starter. Only connections were at the solenoid. Any idea for what these terminals are for and where would they be connected to?

Also, am I correct that the B+ terminal wire from  alternator goes directly to the starter solenoid large terminal where the battery cable also hooks up to? And the grey wire that goes  to the rotary light switch in the cabin, is hooked up to one of the smaller side terminals on the solenoid?

I just want to make sure that the wiring for the alternator and the starter is done correctly. FYI, I have already gotten the appropriate thicker gauge wires to replace the aging grey and red cloth wires per advice.

1965 230 SL (Family Owned Since June 1965)
1974 Porsche 914 2.0L
2000 LX470 100 Series LandCruiser

lpeterssen

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Re: Added new Bosch SR59X to my 230SL
« Reply #1 on: September 06, 2020, 18:42:35 »
Dear McBenz

The connections should be like this:

All terminals are numbered, so

T30 goes to the battery cable and also to the red cable coming from alternator (B+)

T50 goes to the grey cable coming from your ignition switch

T16 is an optional connection that should be routed to the positive post of your ignition coil.

Take a closer picture of the back to confirm my saying.

Best regards
L.peterssen
« Last Edit: September 06, 2020, 20:44:18 by lpeterssen »

McBenz

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Re: Added new Bosch SR59X to my 230SL
« Reply #2 on: September 07, 2020, 00:41:01 »
great, thank you for clearing that up. I guess those additional terminals on the end of the starter housing threw me off. Thanks again for your help.
1965 230 SL (Family Owned Since June 1965)
1974 Porsche 914 2.0L
2000 LX470 100 Series LandCruiser