Backup lights: Black wire w/pink stripe and purple wire w/orange stripe go to the switch used for your backup lights. You will probably need to add a contact switch to the shifter since most aftermarket shifters have no switch.
Neutral safety switch: Red wire w/light blue stripe and white wire w/pink stripe go to the switch for neutral safety. Some aftermarket shifters come with this switch.
There are a total of 3 electrical plugs that connected to the T5 setup. The plug with 4 wires is the one that has all 4 wires for neutral safety and backup lights.
Two additional plugs with 2 wires each are not used for anything in this conversion.
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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft