wreckermk36 Posted June 19, 2011 Report Share Posted June 19, 2011 so first of all, i have a 52 dodge truck b3b, with the original 218 and 3 on the tree. resently i did the conversion from 6v to 12v. i changed the battery to neg. ground, the ignition coil with an exsternal resister, a delco 10 si alternator and got new voltage gauge cause i blew the old one. after doing everything truck starts right up. it started maybe 10 times after the switch. but know when i turn the key the voltage gauge says 12v, when i push the button to turn the engine the volage drops to almost nothing. wft? could i have alread y blown the 6v starter? or maybe the distibitor? i dont know. all help would be greatfully apperiated. man i wish this thing had spell check. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted June 19, 2011 Report Share Posted June 19, 2011 did you verify that the alternator was actually charging the battery..after a number of starts..any battery will go low and show a drop because it does not have the current to support the demand you are putting on it with the starter.... Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted June 19, 2011 Report Share Posted June 19, 2011 There is a spell check. Look for the ABC with a check mark in the upper right corner of the message box. I suspect that your battery had failed. Is it new? I've seen batteries fail like that. They'll show 12 volts with no load but as soon as a load is applied they drop to 0v. It's usually due to a bad connection between the cells. Merle Quote Link to comment Share on other sites More sharing options...
wreckermk36 Posted June 19, 2011 Author Report Share Posted June 19, 2011 so the battery with a multi meter says 12.03vdc and same on the gauge but goes to zero when i try to start. it is a new battery. but even when i try to jump start it it wont go. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted June 19, 2011 Report Share Posted June 19, 2011 got new voltage gauge cause i blew the old one. If the "old one" was a voltage gauge it was not "the old one". Your truck originally had an amp gauge not a voltage gauge. This amp gauge differs from a volt gauge as it shows current flow and not voltage. If you connected your new volt gauge the same way as the original amp gauge was connected this may be your problem. A volt gauge shows voltage to ground not current flow. Need more information to assist you in solving this problem. Quote Link to comment Share on other sites More sharing options...
wreckermk36 Posted June 19, 2011 Author Report Share Posted June 19, 2011 so how should i wired the voltage gauge, cause i have it just like how the amp meter was and the truck worked a dew times after that. and the gauge itself still seems to be working. Quote Link to comment Share on other sites More sharing options...
greg g Posted June 20, 2011 Report Share Posted June 20, 2011 a voltage gauge generally is grounded simple as it gets Quote Link to comment Share on other sites More sharing options...
greg g Posted June 20, 2011 Report Share Posted June 20, 2011 just noticed that the gound on the VG in the above graphic is not correct. Didn't do the drawing just cribbed from the net. Quote Link to comment Share on other sites More sharing options...
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