Click for Abeking Click for Cross Click for Furuno Click for Northern Lights Click for Burger

caterpillar 3412 TA GP SP sensor cables

Discussion in 'Engines' started by zappiros, Oct 29, 2013.

You need to be registered and signed in to view this content.
  1. zappiros, Oct 29, 2013
    #1
    zappiros

    zappiros New Member

    Joined:
    Nov 6, 2008
    Messages:
    57
    Location:
    Bonaire, South America
    hello to all, I have a pair of 3412TA CATS marine engines on my boat and recently needed to change the GP SP Speed sensors 2 on each engine, one is the main and one for back up...now the problem I am habing is because new GP SP 1060543 sensor only came with two wires and this new sensor replaces both old sensors... now.....old sensors had three wires? so I do not know wich wire should I use and wich wire should I left unused .???? anyone have gone thru this already? many thanks for all the help, !!!!
  2. Capt Ralph, Oct 30, 2013
    #2
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,427
    Location:
    Satsuma, FL
    So, you know you have new sensors and not the wrong ones. I guess somebody told you they were new and not where the third wire goes.
    It's probably just a drain or ground. You should have two wires numbered and matching numbered wires on the harness.

    Seems there may have been some sensor changes after serial number
    1EZ3925 But I can not find any details.

    You may want to contact Cat Tech directly. Maybe one of the kids her on YF has a schematic.