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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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MSD Dumbness
the car: 1970T
Engine: 2.2L Dizzy: Marelli Coil: MSD Blaster Old CDI: Bosch Questions: 1) The old 3 pin connector into the bottom of the bosch box, is the red in the middle of the connector switched power or constant power? 2) if that red wire is switched power, where should i pick up constant power with the "heavy red" wire? 3) do i use the white wire to pick up the spade near the cap on the dizzy?? i have searched thru most of the archives, but i can't find answers to these specific questions. Thanks, Joe
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well  **
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02-07-2006, 06:20 AM
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Registered
Join Date: Nov 2003
Location: Ags, Mx or McAllen, TX
Posts: 2,792
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you need to run a wire to the batery or try one of the fuses in the engine bay
check this thread: MSD wiring help needed
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X/A |
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02-07-2006, 07:55 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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...thanks, but didn't really answer my question
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well **
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02-07-2006, 08:52 AM
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Join Date: Jul 2001
Location: Wilmington, NC USA
Posts: 635
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1- CDI red wire is switch power.
2-There is a power lug at rear of electronics shelf where constant 12 v power is availablke. I'd put the MSD connection here. Much easier than running to starter. 3-white wire goes to dizzy lug which goes to points. You will probably need the tach adapter to get yopur tach working. Good luck.
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69 911 2.3Ez 85 928S |
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02-07-2006, 09:10 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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had the tach rebuilt to be compatible with the MSD unit THANKS VERY MUCH!!!
Joe
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well **
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02-07-2006, 09:32 AM
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Registered
Join Date: Aug 2001
Location: Brighton UK since 11/2012
Posts: 3,170
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MSD sells a tach adaptor. The power wire should come from the battery not a fuse panel and the MSD unit needs to be grounded.
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From November 2012; Precision Porsche Specialist Sussex UK, +44 (0)1825-721-205 2001-2012 Gerber Motorsport Inc. 206-352-6911 07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red 08.16.09 1999 Kawasaki ZRX1100. Green. |
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02-07-2006, 10:03 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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had the tach rebuilt to be compatible with the MSD unit THANKS VERY MUCH!!!
Joe
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well **
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02-07-2006, 11:04 AM
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Registered
Join Date: Mar 2005
Location: Austin, TX
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Quote:
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Matt J. 69 911T Targa - "Stinky" 2001 Boxster "Stahlgewehr" |
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02-07-2006, 11:17 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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with the old original wiring harness, there was a braided ground that went to the base of the dizzy, and with the MSD, there is just one big ground wire that i bolted to the chasis, do i need to be worrying about re-grounding the dizzy???
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well **
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02-08-2006, 05:27 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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car starts and runs, but still rough due to dizzy being off and carbs needing tuned, but still no tach worky, black and purple wire straight into msd box on the tach spade. tach was rebuilt with new guts which include internal tach adapter, my only guess is a short in the line to the tach, but i had continuity...so i'm confused...
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well **
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02-08-2006, 05:02 PM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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02-08-2006, 09:52 PM
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