Pagoda SL Group

W113 Pagoda SL Group => Electrical and Instruments => Topic started by: cfm65@me.com on December 16, 2023, 08:39:04

Title: Voltage regulator black wire
Post by: cfm65@me.com on December 16, 2023, 08:39:04

Hi Guys,
Could someone please let me know where this black wire originates? This end is dead, no + no -.
Much appreciated.
Regards
Chris

Title: Re: Voltage regulator black wire
Post by: BobH on December 16, 2023, 11:01:20

Hello Chris, the black wire connects to terminal DF on the alternator, i think you'll only see a voltage there when the engine is running

Title: Re: Voltage regulator black wire
Post by: lpeterssen on December 16, 2023, 11:09:27

Dear Chris

Bob is right, none of those cables will show anything unless the alternator is operating.  You have one brown , cable connected to “D-“ which is a ground one terminal with two cables one blue and the other red/blue which are connected to terminal “D+”  and run your charge light at the instrument cluster. And finally the black cable you mention which goes in between join8ng terminals labeled “DF” at voltage regulator and alternator.

Best regards
L.peterssen

Title: Re: Voltage regulator black wire
Post by: cfm65@me.com on December 16, 2023, 11:11:41

Apologies guys,
This is the voltage regulator on my E Type and it was supposed to be posted on the Jag forum.

The wires are brown/purple, black, brown/green.

Thanks, I’ll give it a go.
Much appreciated.
Regards
Chris

Title: Re: Voltage regulator black wire
Post by: BobH on December 16, 2023, 11:35:02

Ah, totally different, looks like the black is an earth/ground, see if you can trace it and see if it's a bad connection somewhere

Perhaps this post should be moved to other cars in case it causes confusion