RickWill Posted February 28, 2014 Share Posted February 28, 2014 I was working on my no crank no start issue so I checked my starter relay 25221P right behind the battery and there is a second plug identical to the starter one that wasn't being used just sitting there. What is it for? Link to comment Share on other sites More sharing options...
ahardb0dy Posted February 28, 2014 Share Posted February 28, 2014 is your truck a manual or automatic? there are un-used plugs under the hood depending on what your truck has Link to comment Share on other sites More sharing options...
RickWill Posted February 28, 2014 Author Share Posted February 28, 2014 Auto Link to comment Share on other sites More sharing options...
ahardb0dy Posted February 28, 2014 Share Posted February 28, 2014 Going from the 94 FSM, as anything earlier is not available online, Under the hood in the battery area there may be a unused plug for a ASCD (cruise) relay, a unused plug for an interlock relay if the truck was a manual trans (which yours is not), here is a labeled diagram from the same FSM I labeled a while back for someone else, you can see some of the plugs that may not be used in your application: Link to comment Share on other sites More sharing options...
ef9 Posted March 2, 2014 Share Posted March 2, 2014 I noticed the FSM has errors in regards to the "Inhibitor Relay" for the automatic trans WD21 (I have both '94 and '95 FSM). Link to comment Share on other sites More sharing options...
ahardb0dy Posted March 3, 2014 Share Posted March 3, 2014 (edited) what is the error? Only error I see in both the 94 and 95 FSM is it shows a plug numbered 8M and 9M in the list but the diagram does not have the 9M, but if you have the 95 FSM supplement it does show 9M, 8M shows as inhibitor relay, automatic, wagon, without ASCD 9M shows as inhibitor relay, automatic, wagon with ASCD see below: Edited March 3, 2014 by ahardb0dy Link to comment Share on other sites More sharing options...
headpeace Posted March 3, 2014 Share Posted March 3, 2014 so which one is the starter relay, I didn't see it labeled Link to comment Share on other sites More sharing options...
ahardb0dy Posted March 3, 2014 Share Posted March 3, 2014 On an automatic equipped truck it should be 8M or 9M depending on if the truck has cruise or not. Link to comment Share on other sites More sharing options...
headpeace Posted August 23, 2014 Share Posted August 23, 2014 I don't see either of those on the diagram Link to comment Share on other sites More sharing options...
ahardb0dy Posted August 23, 2014 Share Posted August 23, 2014 (edited) on my pic above, 8 & 9 are the ones with the red lines Edited August 23, 2014 by ahardb0dy Link to comment Share on other sites More sharing options...
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