MSD window switch not working - please help!
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,161
Likes: 17
MSD window switch not working - please help!
I have the whole system hooked up correctly......I tested each component out and it seems that the MSD switch is not providing a ground within the 3000 to 6000 RPM range.......
I have both loops cut and there is power going to the unit...the only thing I can think of is that I wired the PCM rpm wire wrong!?!? I never found a white wire on the PCM #10 (the one I hooked to it was blue) - can this be the problem guys?
I have both loops cut and there is power going to the unit...the only thing I can think of is that I wired the PCM rpm wire wrong!?!? I never found a white wire on the PCM #10 (the one I hooked to it was blue) - can this be the problem guys?
Team Owner
Joined: Mar 2001
Posts: 25,013
Likes: 80
From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Re: MSD window switch not working - please help! (OliverM5)
Yes, it is wrong. I have some pics somewhere I will look for it and repost for you. :cheers:
[Modified by racer44, 10:37 AM 9/5/2002]
[Modified by racer44, 10:37 AM 9/5/2002]
Team Owner
Joined: Mar 2001
Posts: 25,013
Likes: 80
From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Re: MSD window switch not working - please help! (OliverM5)
*edit* I am at work, when I get home I will upload my photos from my digital camera.
[Modified by racer44, 10:37 AM 9/5/2002]
Racer
Joined: Jan 2001
Posts: 371
Likes: 0
From: Paris TX
Re: MSD window switch not working - please help! (OliverM5)
Uh oh. I hate to give a conflicting story but maybe there are lots of places to tap into the tach wire.
Forum Member Kent posted these directions a while back:
"It is the #10 wire (white in color) on the RED PCM connector.
Hold the connector so that the connector tabs are on top, and the wires are pointing out the back of the connector away from you. #10 should be a white wire on the bottom row, 10th wire in from the left edge.
The PCM is located behind the RF fender, between the wheelhouse and the dash panel, below the battery. "
I followed them exactly and it worked for me as well as other Forum members. I took a picture of the connector (below). When you look at the mating surface of the connector it's red plactic and has the word 'red' stamped on it. The pin # for each wire is stamped on the connector.
Good Luck
Forum Member Kent posted these directions a while back:
"It is the #10 wire (white in color) on the RED PCM connector.
Hold the connector so that the connector tabs are on top, and the wires are pointing out the back of the connector away from you. #10 should be a white wire on the bottom row, 10th wire in from the left edge.
The PCM is located behind the RF fender, between the wheelhouse and the dash panel, below the battery. "
I followed them exactly and it worked for me as well as other Forum members. I took a picture of the connector (below). When you look at the mating surface of the connector it's red plactic and has the word 'red' stamped on it. The pin # for each wire is stamped on the connector.
Good Luck
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Re: MSD window switch not working - please help! (racer44)
There are only two places to hook up the tach wire since our coils are not true single fires. The CPU controls them in 4's thats why we have to use the 4 cylnder operation on the window switch. One is a white wire, the other I think is a purple wire with a stripe..(don't quote me on the second one)
Team Owner
Joined: Mar 2001
Posts: 25,013
Likes: 80
From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Re: MSD window switch not working - please help! (OliverM5)
OK, here are some pics I found that I had. Hope these help.
[Modified by racer44, 10:52 AM 9/5/2002]
[Modified by racer44, 10:52 AM 9/5/2002]
Racer
Joined: Aug 2001
Posts: 270
Likes: 0
From: Crown Point IN
Re: MSD window switch not working - please help! (OliverM5)
I found the line under the passenger side of the dash. I'll be posting up pics on the thread I started. http://forums.corvetteforum.com/zerothread?id=380488
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