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> Help, Alternator Hook up for the /6, I thought I had it right! - ZAP, ZAP..
DougC
post Oct 3 2005, 09:09 AM
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I have a problem where I get a major spark when attaching the battery cables to the battery. Clay Perrine pointed out to me that it's the heavy RED wire that's attached to the Starter (same place as the battery cable) and runs up to the back of the alternator. Clay suggested that this red wire was hooked to the wrong post on the altenator. OK, I removed the complete CIS injection unit and peeled back the engine shoud. The wires were hooked up to the alternator like in Wayne Dempsy's book, the pictures I took upon disassembly were lost so I had to use the book for this. I'm using a newly rebuilt Marchall alt. with external regulator. Here's a breakdown of how I have it wired:

(posts are clockwise from the top)
"+G1" or "+61" = blue wire
"B+" = Red wires [one thick, one thinner]
"another B+" = short ground strap from engine case
"DF" = black wire with spade end
"D-" = 3 small brown wires
"D." = un-used

Where have I gone wrong?

Doug C
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Posts in this topic
DougC   Help, Alternator Hook up for the /6   Oct 3 2005, 09:09 AM
Porsche Rescue   I recently wired a Bosch alternator on my six conv...   Oct 3 2005, 09:44 AM
DougC   Jim, I moved the ground to the fan frame body just...   Oct 3 2005, 10:37 AM
Porsche Rescue   Sorry, but I am not too knowledgable on electrical...   Oct 3 2005, 10:52 AM
DougC   I'm using the relay board..and the connector t...   Oct 3 2005, 11:00 AM
Cap'n Krusty   "B+" is "B+". Why would you EVER hook it up to gr...   Oct 3 2005, 11:03 AM
Porsche Rescue   The small red is the D+ and does not connect to B+...   Oct 3 2005, 11:14 AM
Porsche Rescue   I just looked at Dempsey's book, page 26. Tota...   Oct 3 2005, 12:02 PM
ClayPerrine   Doug, Start with unhooking everything but the b...   Oct 3 2005, 12:04 PM
Kerrys914   My turn http://www.914world.com/bbs...   Oct 3 2005, 12:21 PM
Root_Werks   ...   Oct 3 2005, 12:30 PM
DougC   "B+" is "B+". Why would you EVER hook it up to gro...   Oct 3 2005, 12:44 PM
Jeffs9146   Here is a photo of my alt. Jeff PS: this is from...   Oct 3 2005, 01:00 PM
DougC   Doug, are you running your wires to the factory 91...   Oct 3 2005, 01:01 PM
DougC   Thanks for the picture Jeff. Unfortunately for me,...   Oct 3 2005, 01:10 PM
Jeffs9146     Oct 3 2005, 01:13 PM
DougC   Jeff, from looking at the picture it seems to have...   Oct 3 2005, 01:25 PM
Porsche Rescue   That is identical to the Bosch alternator I have i...   Oct 3 2005, 01:26 PM
Aaron Cox     Oct 3 2005, 01:26 PM
Jeffs9146  
  Oct 3 2005, 01:39 PM
DougC   Jim, you are probably right about that, I guess I ...   Oct 3 2005, 01:47 PM
Root_Werks     Oct 3 2005, 02:26 PM
DougC   Oh, I see...so just make sure that the wires in th...   Oct 3 2005, 03:15 PM
Porsche Rescue   Doug, are you plugging to the 3 male blades on the...   Oct 3 2005, 05:14 PM
DougC   OK guys, I had the ground strap connected wrong. I...   Oct 5 2005, 09:47 AM
Ferg   Doug, Great to hear that you are this far, you mu...   Oct 5 2005, 10:02 AM
sixnotfour  
  Oct 5 2005, 10:13 AM
Porsche Rescue   Doug, First, are you sure the battery is fully ch...   Oct 5 2005, 12:26 PM
DougC   Jim - I'm plugging the VR wires (3 prong plug)...   Oct 5 2005, 12:38 PM
Porsche Rescue   Doug, The alternator and its wiring is not an issu...   Oct 5 2005, 12:57 PM
DougC   Jim you are a big help.. I've obviously been t...   Oct 5 2005, 01:17 PM
Ferg   Went through my old pics (this was my old motor) a...   Oct 5 2005, 01:40 PM
Porsche Rescue   You definitely need a ground from the tranny to th...   Oct 5 2005, 02:09 PM
DougC   Jim - I meant to say "Generator Light" mines not c...   Oct 5 2005, 02:17 PM
Porsche Rescue   Just so we don't muddy the water too much: Wha...   Oct 5 2005, 02:42 PM
DougC   OK, Jim I've taken several notes and will try ...   Oct 5 2005, 03:35 PM
Porsche Rescue   We know the large red wire from B+ goes to the sta...   Oct 5 2005, 04:00 PM
DougC   The color of the wires that I have for that VR plu...   Oct 5 2005, 04:12 PM
Porsche Rescue   I would try the blue to D+ on the 3-pin plug (forw...   Oct 5 2005, 06:31 PM
DougC   OK I added a ground strap to the tranny, connected...   Oct 6 2005, 09:05 AM
Porsche Rescue   Before worrying about the starter, get the battery...   Oct 6 2005, 10:03 AM


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