macattack Posted July 16, 2017 Share Posted July 16, 2017 gonna replace my tran temp gauge and the original says neg ground stamped on the back. the replacement does not say anything. is there a way to find out if the gauge is neg or pos ground? thanks Quote Link to comment https://www.bigmacktrucks.com/topic/50487-trans-temp-gauge-pos-or-neg-ground/ Share on other sites More sharing options...
j hancock Posted July 17, 2017 Share Posted July 17, 2017 Pretty much everything is neg. ground these days. I would call the shop where you got the part and ask them to confirm. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/50487-trans-temp-gauge-pos-or-neg-ground/#findComment-375087 Share on other sites More sharing options...
macattack Posted July 17, 2017 Author Share Posted July 17, 2017 (edited) thanks bud. the oem is #3MT237P7 gauge. the one i got is from allison, but the sending unit with the new gauge is a single wire the original sending unit is 2 wire. the allison gauge has your basic send and ign terminals. but there is 2 smaller bolts with an insulator between them one is labelled + and the other - . dont know what that is about. but your probably correct. thanks again Edited July 17, 2017 by macattack Quote Link to comment https://www.bigmacktrucks.com/topic/50487-trans-temp-gauge-pos-or-neg-ground/#findComment-375125 Share on other sites More sharing options...
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