old skool too cool Posted March 23, 2014 Report Share Posted March 23, 2014 hey so I just got a 1967 Datsun 520 voltage regulator is bad but I knew that's not what was wrong since it looked brand new and was too easy to change so only wire coming off that first relay type clip thing was going to alternator so can anyone help me with diagram or anything it would be much appreciated while at idle warm volts at about 12 13 at 40 mph about 18 with lights at idle dying about 11 going down at 40mph about 15 maybe bad alternator battery is good fersure thinking its got to be other wires that come off regulator just because all those have been cut and only wire coming off regulator is going to alternator by the way I just busted a nut since I just lost ratsun forum virginity Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 Its not the alternator. 18v indicates alternator is strong. But it is unregulated. Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 Is this the kine you have? Quote Link to comment
datzenmike Posted March 23, 2014 Report Share Posted March 23, 2014 Here's another cherry to pop. Try breaking up your run on sentence into separate ideas with capitols and periods. Communication is really important when describing a problem so mistakes are not made or offered and time wasted. Would you talk to your brain surgeon before an operation like that? ... Take your time, we'll wait, then go have a cigarette. 1 Quote Link to comment
old skool too cool Posted March 23, 2014 Author Report Share Posted March 23, 2014 alright I will try and make it more clear. NO It looks like tin box having problems uploading pics do you need a link for pictures or is there a way to download attatchments thanks for help Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 We use links for pictures. Quote Link to comment
old skool too cool Posted March 23, 2014 Author Report Share Posted March 23, 2014 my bad for dumb questions just saw the forum on uploading. I started photobucket now it wont let me paste image link im just copy and paste not much more right do you know why it wont let me paste Quote Link to comment
old skool too cool Posted March 23, 2014 Author Report Share Posted March 23, 2014 %5BIMG%5Dhttp://i117.photobucket.com/albums/o46/oldskooltookool/snapshot-123_zpsc2e8c99d.jpg %5BIMG%5Dhttp://i117.photobucket.com/albums/o46/oldskooltookool/snapshot-121_zps89e9c307.jpg %5BIMG%5Dhttp://i117.photobucket.com/albums/o46/oldskooltookool/snapshot-118_zps72742b29.jpg cool starting to somewhat figure it out let me know what you think. Quote Link to comment
SS320 Posted March 23, 2014 Report Share Posted March 23, 2014 G'day Old Skool. Hopefully, someone will be along to help shortly. In the mean time try this for your pics. http://community.ratsun.net/topic/691-how-to-post-pictures-and-keep-online-photo-albums/ Quote Link to comment
datzenmike Posted March 23, 2014 Report Share Posted March 23, 2014 Werks for me.Nice truck. Seafoam Green??? 1 Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 All those regulators look the same. What does the back of the alternator look like? Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 If the correct type of alternator is installed, here is the wiring you asked about Regulator A - to A on alternator F - to F on alternator N - to N on alternator E - to E on alternator L - WR to CHG lamp in Dash I - BW to IGN switch 12V Engine harnesss color (that go from Voltage Regulator to Alternator): harness colors W - Alternator Y - Field WB - Neutral B - Earth (ground) _======_ | WB B | Harness Wire Colors | W Y | (not necessarily alternator colors) ---------- W - A on alternator to A on regulator WB - F on alternator to F on regulator Y - N on alternator to N on regulator B - E on alternator to E on regulator Quote Link to comment
old skool too cool Posted March 23, 2014 Author Report Share Posted March 23, 2014 im not exactly sure mike some sort of primer green. Ok so this is confusing me out if you can specify on acroynoms. whats the field wire? and make the connections from each a little more clear from regulator to alternator. Assuming under dash is ok. wiring is all a little new to me if not it makes a little more sense everytime I look at it. May not reply till tomorrow some time seeing my only internet is starbucks down the street but I definitely appreciate it what im getting on here Quote Link to comment
hang_510 Posted March 23, 2014 Report Share Posted March 23, 2014 voltage regulator is bad but I knew that's not what was wrong since it looked brand new and was too easy to change by the way I just busted a nut since I just lost ratsun forum virginity could be a reason it looks new and didnt solve the issue. sounds like its bad again... should <14v when charging It looks like tin box thats it. mmm, Blenders in the Grass Quote Link to comment
SS320 Posted March 23, 2014 Report Share Posted March 23, 2014 do you know why it wont let me paste I might. Try using google chrome or any other browser than internet explorer... Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 > whats the field wire? It is the Yellow wire on the plug which connects to the alternator. The alternator itself may have different colors. harness colors W - Alternator Y - Field WB - Neutral B - Earth (ground) W is white wireWB is white wire with black stripe Y is yellow wire B is black wire Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 In case you find diagrams easier Quote Link to comment
MikeRL411 Posted March 23, 2014 Report Share Posted March 23, 2014 That diagram shows the mechanical external voltage regulator. Can be adjusted for voltage level if you have infinite patience. The solid state voltage regulators have the same plug interface and work very well. Quick visual check for type. Short "can", electronic VR. Tall "can" mechanical VR. Quote Link to comment
old skool too cool Posted March 23, 2014 Author Report Share Posted March 23, 2014 cool ima go mess with it ill let you know exactly how it goes Quote Link to comment
kgrantkey Posted March 23, 2014 Report Share Posted March 23, 2014 Here are two modules I removed from a 1972 Datsun truck. The first I don;t know what it is, maybe a choke relay? The next may be a voltage regulator and it;s sealed shut with a plastic-glue like it's an old solid state module. That truck is long gone and the parts I kept are slowly being tossed out as time goes by, Quote Link to comment
ggzilla Posted March 23, 2014 Report Share Posted March 23, 2014 Horn relay Voltage relay. Note the wire colors Quote Link to comment
MikeRL411 Posted March 24, 2014 Report Share Posted March 24, 2014 The next may be a voltage regulator and it;s sealed shut with a plastic-glue like it's an old solid state module. That truck is long gone and the parts I kept are slowly being tossed out as time goes by, That really is a solid state Voltage regulator. Quote Link to comment
old skool too cool Posted March 24, 2014 Author Report Share Posted March 24, 2014 yeah the bottom pic is the regulator. so I messed with it a little and i still haven't fully fixed it but the problem of losing volts seems to have disappeared with use of accessories like lights and so on. the weird thing is im having a steady idle at around 11 12 volts is this cool should i check accuracy of volt gauge. maybe no need to fix if it has steady idle now? I know that's low but will it make that much of a difference if its idling that low ? Quote Link to comment
ggzilla Posted March 25, 2014 Report Share Posted March 25, 2014 12v is not charging. 13.5 to 15 is charging. Quote Link to comment
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