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2011 Chevy install question MM2

Discussion in 'Fisher Engineering Discussion' started by slowwrench, Jan 25, 2011.

  1. slowwrench

    slowwrench Junior Member
    Messages: 5

    Just got a new truck, installing my old MM2 on it. Truckside wiring was not too big a deal except one annoyance. The red wire on the controller harness is to be hooked up to a keyed accessory. Looking in the fuse box on the left side of the dash, everything is hot with the key off. I don't want to run a hot wire from the fuse box under the hood all the way to under the dash, is there an easier way?

    Doesn't help that the truck is pretty low optioned, I think the only truely keyed accessory is the rear defog and also the power widows.
  2. Tyler Jones

    Tyler Jones Junior Member
    Messages: 15

    You will find switched 12 volts in the SEO port which is located in the cab just behind the e-brake, this is the only spot that GM recommends. You will need to remove the cover which just pops off and there are quite a few vacant pins so use you test light an check each one until you find switched 12 volts.
  3. chevyzrule810

    chevyzrule810 PlowSite.com Addict
    Messages: 1,288

    Ditto thats how mine is setup in a open fuse slot
  4. slowwrench

    slowwrench Junior Member
    Messages: 5

    The SEO port in the circut breaker box? In the middle on the bottom. I have three pins, one is hot key on or off, two are cold key on or key off. Do I have to start the truck to get one hot when running?
    Thanks for the help so far.
  5. PLM-1

    PLM-1 Senior Member
    Messages: 424

    There's one on the side panel of the dash too. I used ACC with a plug in jumper wire.