help with dme wiring color code 89 911
 

Has anyone maped out the wire colors going to the dme for an 89 911. More specifically, there are 8 wires that go from the dash area to the main harness of the dme in an 89 911. I realize there are many more wires but 8 of them split off from the main harness and go to the dash. They are:

1. thick red wire - always on - battery
2. thick black wire - on with ignition on
3. med black wire - on with ignition on
4. thin yellow - on slightly with ignition on

5. green/yellow wire - ?
6. red/green wire?
7. thin black wire?
8. black and violet wire?

Obviously wire one is to the battery. I would assume that wire 2 is for ignition. Any answers on the rest would be really appreciated! I've attached a photo of the wire are I am talking about.

thanks!

Yan



http://forums.pelicanparts.com/uploa...1292178123.jpghttp://forums.pelicanparts.com/uploa...1292178295.jpg

5. green/yellow wire - ?
6. red/green wire? Coil, wire to a safty flaser system so the coil is hot with the engine starting .
7. thin black wire? 12 volts to the DME relay
8. black and violet wire? is the tach drive

The color codes your looking for are all documented in the Bentley service manual.

4. Yel goes to the ignition switch. ( pin 4 )

5. The grn/yel goes to the air conditioning system. ( pin 29 )

6. The Bentley shows that the red/grn goes to the Air Flow Sensor. ( pin 7 )

7. Read comment for number 8 below. ( pin 11 )

8. The blk/vio does go to the tach as Flat6pac has stated, but there is also a black wire that completes the loop. This may be your number 7. ( pin 21 )

I got this information from page 970-28.

i'm on bentley (970-30/31) for an 89. Same colors. Are the colors usually accurate as far as the Bentley diagram goes? I just don't like paragraph 2 on page 900-4.