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MSD Digital Window Switch

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Old Apr 20, 2005 | 08:18 PM
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Default MSD Digital Window Switch

i've got an 04 coupe. is the white wire under the dash on the driver side the tach wire? is it wrapped up in electrical tape? Any tricks I need to know in installing this part? TIA
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Old Apr 21, 2005 | 09:29 AM
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There are three white wires in that harness that are basicly the same size. You have to test each one to find the correct wire.
Set it up as a four cylinder.
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Old Apr 21, 2005 | 05:36 PM
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A 4 cyl? There is a 1 cyl. setup with this box. I was thinking that was the way to go. I'll test the wires.

Thanks for the help.
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Old Apr 23, 2005 | 12:43 AM
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if you use the white wire you have to set it up as a 4 cyl. i just installed one yesterday. it doens't work when it's set on 1 cyl. like the instuctions say
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Old Apr 23, 2005 | 11:45 AM
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thanks sprayn99. any clues on the tach wire? i've found 3 but none seem to be the tach feed.
TIA
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Old Apr 23, 2005 | 12:00 PM
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I used the #10 pin white wire off the computer in the front pass tire well (under batt). It was easyer for me to get to concerning were I mounted my MSD switches. Another choice.
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Old Apr 23, 2005 | 01:59 PM
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found the tach wire and the box is running great. thanks guys.
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Old Apr 23, 2005 | 02:51 PM
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wth man that pisses me off. I thought I did something wrong cause It wouldnt work for me. Of course I was using the 1 cyl setup like they say. Any ideas on the thought process behind this BS? sorry im a little upset, I tinkered with that thing for hours.
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Old Apr 23, 2005 | 05:52 PM
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I'm going to be doing the same thing here over the next week/2. I got the digital MSD unit. Did not read the directions yet, but it appears from what you guys are saying is to set it for 4 cyl. Are there any other tricks I should know. I'm installing a NXL kit with MSD digital window, WOT switch, remote bottle opener, heater, purge kit, NX switch panel, fuel pressure gauge, & n2o guage. I think that covers all the parts. I've seen some trick/clean looking set-ups on this site. Any feedback would be appreciated.

Thanks
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Old Apr 23, 2005 | 08:31 PM
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make sure you wire the window switch on the switch side of the relay and not right off the solinoid like the instructions say. i followed the instructions and the fuel solinoid didn't work due to lack of amprerage, and the n2o solinoid doesn't use as much amps so it was working. so on the dyno i had a 18.7 to 1 air fuel ratio. (yea not good at all). so be carefull how and where you wired it
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Old Apr 24, 2005 | 10:55 AM
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i wired mine on the fpss. that way if the window switch isn't activated the fpss isn't grounded.
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Old Apr 25, 2005 | 01:34 AM
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Just your window running through the fpss?
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Old Apr 25, 2005 | 11:14 PM
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No the fpss goes to the relay. I'm using the window switch to supply ground for the fpss. If the fpss isn't grounded, the relay is not grounded therefore never activating the system. I'm sure there are other ways to control the relay.
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Old Apr 26, 2005 | 12:29 AM
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Oh I see, ya there are many, many ways to do it.
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