944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Wiring LSx / Conversion Manual

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Wiring LSx / Conversion Manual Empty Wiring LSx / Conversion Manual

Post  Bluemach1 Sat Apr 10, 2010 6:37 pm

Is the 944 V8 wiring modifications section in the manual complete? Reason I ask is that while searching another topic I have come across post on the "old forum" that indicate additional wiring at T1 (14 pin) in the passenger side footwell as well as additional wire connectons at T21 (14 pin drivers side, engine compartment).

Additional wiring seems to be related mostly to A/C and Tach. I want to have both.

I am starting to get a little freaked out by the electrical. affraid

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Wiring LSx / Conversion Manual Empty Re: Wiring LSx / Conversion Manual

Post  Admin Sat Apr 10, 2010 8:17 pm

You only need the 14 pin on the fire wall for gauge info to the car, Other than the starter wire and alt wire ,which are not in the 14 pin plug, you don't need anything else. I do believe you can get the tach wire to the gauge at the passenger plug, but I would still need to verify that. It's been a day or to since I have been there!
Neither plug is needed for the AC!

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Post  Bluemach1 Sat Apr 10, 2010 8:56 pm

I just got done stipping the 14 pin plug (T21) at the firewall per the manual. I was actually doing a search for something related to teh oil pressure sending unit when all of this other stuff popped up about the 14 pin plug in the passenger side.

The manual does say that pin 13 on T21 is A/C request - PCM.

Let me know what you dig up on tach wiring.

THANKS!

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Post  gt1scca Sat Apr 10, 2010 9:07 pm

Ted,

The only "final" solution I have found for connecting the factory tach must be done @ the tach terminals (rear of the tach). There should be info for those terminals on the 14-pin specs page. The A/C terminal info is straight out of the Porsche FSM. There are a few ways to wire GM A/C in the Conversion, though.

Tach wiring info is definitely in the Wiki...
http://944hybrids.pbworks.com/944-Pin-Connections

Wiki wrote:Tach Connections are done @ the Tachometer terminals:

LEFT LUG = + [Positive]
CENTER LUG = SIGNAL [Input]
RIGHT LUG = - [Negative]
The footwell plug used to connect to the 944 PCM, and I myself have not verified wiring through that particular plug. It very well may be a possibilty...

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Post  Bluemach1 Sat Apr 10, 2010 9:28 pm

WIKI WIKI WIKI !!! COOL!
I have never even looked at it! Shocked I've learned something very good today.

Soooo... The table on the wiki matches the manual - cool. That is how I stripped the male side of the plug down. However, I am a bit confused by the legend below the picture showing 1, 2, 3, 4, 5, 7, 13. Whats that about?

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Post  gt1scca Sat Apr 10, 2010 9:35 pm

That's just a pin reference...

This is the part that came from the 944 Service Manual - I guess they didn't include any info for the unused terminals.

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Post  Arthropraxis Sun Apr 11, 2010 1:30 pm

The 14 pin in the passenger side foot well was a writeup on A/C wiring by Bridar. He has a gallery here that explains his wiring and it is very complete. That being said I have talked with several people to get opinions and experiences on how they did their A/C. The consensus was to leave the Porsche system alone all you have to do is some plumbing, run the power for the compressor and ground it. The ecu will compensate for the load without having to run the A/C to the computer. You will have to manually turn off the A/C for full throttle runs. At least that is how I understand it.
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