Engine Wiring Harness - New Product 928sRus
07-02-2014, 07:55 PM
#31
Rennlist Member
Sean,
The 3 wire oil pressure sender on the 89+ cars incorporates a pressure sender and a pressure switch into a single unit. My SWAG is the pressure sender is driving the oil pressure gauge and the switch triggers either the warning light on the gauge or serves as the input to the central warning system incorporated into the digi dash. When the time comes for me to do this replacement I hope a version of this will be available that has three wires for the oil sender that I can splice my existing plug to.
Mike
The 3 wire oil pressure sender on the 89+ cars incorporates a pressure sender and a pressure switch into a single unit. My SWAG is the pressure sender is driving the oil pressure gauge and the switch triggers either the warning light on the gauge or serves as the input to the central warning system incorporated into the digi dash. When the time comes for me to do this replacement I hope a version of this will be available that has three wires for the oil sender that I can splice my existing plug to.
Mike
07-02-2014, 08:00 PM
#32
Sean,
The 3 wire oil pressure sender on the 89+ cars incorporates a pressure sender and a pressure switch into a single unit. My SWAG is the pressure sender is driving the oil pressure gauge and the switch triggers either the warning light on the gauge or serves as the input to the central warning system incorporated into the digi dash. When the time comes for me to do this replacement I hope a version of this will be available that has three wires for the oil sender that I can splice my existing plug to.
Mike
The 3 wire oil pressure sender on the 89+ cars incorporates a pressure sender and a pressure switch into a single unit. My SWAG is the pressure sender is driving the oil pressure gauge and the switch triggers either the warning light on the gauge or serves as the input to the central warning system incorporated into the digi dash. When the time comes for me to do this replacement I hope a version of this will be available that has three wires for the oil sender that I can splice my existing plug to.
Mike
It's easy enough to splice one in if the wires coming from the unit are still good. I've got 3 connectors here but the wires leading in to it are shot. I'm sure someone can find a way to connect up to it I've just not found a solution. For the ones going out that want the three wire I'll make sure to put all in. I think it's pin 7 on the 14 that isn't used on the 87-88 harness. Not in the garage to look right now.
07-02-2014, 08:16 PM
#33
Chronic Tool Dropper
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Sean--
The tinned copper is a regular standard used (read: required) in marine environments. The tin shields the copper from chlorine (part of the sodium and potassium chloride salts in ocean water) and is critical to marine wiring survival. It does not diminish current-carrying capacity in DC circuits, and has only a very nominal effect in AC circuits anyway. That said, I haven't really noticed any tinned copper conductors in any original harnesses. Is this a new standard for harnesses from the factory?
There is/was a company near my last home, Paramount/Downey/Long Beach Ca area, that sells autmotive wire harnesses as well as individual components like wire in all the "correct" colors. I guess there's a big market for replacement pieces for American cars. Anyway, they were a great source for pieces for harness repair/rebuild over the years. The name just escapes me at the moment. I can't remember half of the stuff I've forgotten over the years... But they might be a good source for the colors and sizes you are using. The name will come to me... someday.
The tinned copper is a regular standard used (read: required) in marine environments. The tin shields the copper from chlorine (part of the sodium and potassium chloride salts in ocean water) and is critical to marine wiring survival. It does not diminish current-carrying capacity in DC circuits, and has only a very nominal effect in AC circuits anyway. That said, I haven't really noticed any tinned copper conductors in any original harnesses. Is this a new standard for harnesses from the factory?
There is/was a company near my last home, Paramount/Downey/Long Beach Ca area, that sells autmotive wire harnesses as well as individual components like wire in all the "correct" colors. I guess there's a big market for replacement pieces for American cars. Anyway, they were a great source for pieces for harness repair/rebuild over the years. The name just escapes me at the moment. I can't remember half of the stuff I've forgotten over the years... But they might be a good source for the colors and sizes you are using. The name will come to me... someday.
07-02-2014, 08:44 PM
#35
Chronic Tool Dropper
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Guessing that the new section is not the weakest link.
Considering the feeder sizes from jump post to CE, a single #6 would be more than adequate. I replaced the factory battery-to-statret cable with 1ga, and it was a bit of a challenge getting everything back into factory locations. It was just the right size to fit in the original clamps with modern insulation. Would be a real chore using 1/0, especially with the original routing around the rear suspension mount and making the double-back bend at the crossmember at the starter end.
07-02-2014, 09:22 PM
#36
Nordschleife Master
Guessing that the new section is not the weakest link.
Considering the feeder sizes from jump post to CE, a single #6 would be more than adequate. I replaced the factory battery-to-statret cable with 1ga, and it was a bit of a challenge getting everything back into factory locations. It was just the right size to fit in the original clamps with modern insulation. Would be a real chore using 1/0, especially with the original routing around the rear suspension mount and making the double-back bend at the crossmember at the starter end.
Considering the feeder sizes from jump post to CE, a single #6 would be more than adequate. I replaced the factory battery-to-statret cable with 1ga, and it was a bit of a challenge getting everything back into factory locations. It was just the right size to fit in the original clamps with modern insulation. Would be a real chore using 1/0, especially with the original routing around the rear suspension mount and making the double-back bend at the crossmember at the starter end.
With all my pre-planning for the trip, I didn't see that maneuver at the cross member coming. Also slight bit of surgery to the plastic at the starter contacts to allow for my larger connectors to mate with it.
07-02-2014, 09:57 PM
#37
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You know, it's really hysterical that we have our very own "Lord Voldemort" in our tiny world.
"You know who" makes these looms, but no one will buy one from him....
"You know who" makes these looms, but no one will buy one from him....
__________________
greg brown
714 879 9072
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Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
07-02-2014, 11:03 PM
#38
This is some quality (think Precision Motowerks) type stuff. Attention to detail and someone that backs what he puts out there. Good work Sean. I have a feeling you will be making a lot of these.... 
07-02-2014, 11:11 PM
#39
Next TB/WP this will be on my list.
07-02-2014, 11:22 PM
#40
Team Owner
nice work Sean, thanks for taking this on
07-03-2014, 01:47 AM
#43
Chronic Tool Dropper
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Greg reminds us that Carl has been making this harness for a while now. Since we love all our sponsors, supporters and vendors, it's only fair to point this out. But the thread is about Sean and Roger's efforts, so back to that. You only get to pat yourself on the back every so often as a sponsor, so no need for more distraction I guess.
07-03-2014, 02:59 AM
#44
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The trio of pins on the 89-95 oil pressure sender have the same form factor as the single pin on the 84-89 3.2L 911 and 3.3L 911 Turbo oil pressure sender. I think the senders are made by VDO- would they have supplied the rubber 3-pin connector as well?
07-03-2014, 03:53 AM
#45
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Temp gauge sender connection is different between '87-88 and '89-95. Didn't see that mentioned.