SteezySkreez Posted April 24, 2014 Report Share Posted April 24, 2014 okay guys so ive gone through about 4 alternators. put a new voltage regulator in there, realized that my alternator was internally regulated so rewired to bypass the voltage regulator. still doesnt work. the charge light is always on. If i charge the battery over night it will run for a day or two if i dont have the stereo on or dont use anything electrical for the most part. If i have my lights on my battery will die within 15 minutes and my car will die as well and it will be so dead i wont even be able to jump it. I have to take it out and put it on a charger for a few hours then the car will start up again. i have replaced the battery twice aswell. any of you guys have any idea what could be causing this problem whether its a short or whatever else it could be any suggestions would help thanks 1 Quote Link to comment
SteezySkreez Posted April 24, 2014 Author Report Share Posted April 24, 2014 i have also replaced the batteries twice 1 Quote Link to comment
Guest Rick-rat Posted April 24, 2014 Report Share Posted April 24, 2014 Have you had the alternators tested? Or just replace because you think they aren't working. Do you have power to the alternator? Is the belt tight? Quote Link to comment
tr8er Posted April 24, 2014 Report Share Posted April 24, 2014 Pics of the wiring of your alternator. Voltage reading of system while running. 1 Quote Link to comment
SteezySkreez Posted April 24, 2014 Author Report Share Posted April 24, 2014 i have had it tested and it isnt doing its job but when i took it off and tested it it is worked. the belt it tight and the alternator is hooked up so i dont see why there wouldnt be power to it. 1 Quote Link to comment
datzenmike Posted April 25, 2014 Report Share Posted April 25, 2014 The by pass wiring is this way... White/Black stripe to White/Red stripe and White to Yellow. You will also have to unplug your choke heater relay as it will be wired permanently on even with the ignition off. (failure to do so will kill the battery if sitting over a weekend) At the carburetor, join the Blue choke heater wire to the Red idle cut solenoid wire beside it. The idle cut wire becomes the new power source for the choke heater. 1 Quote Link to comment
ggzilla Posted April 25, 2014 Report Share Posted April 25, 2014 Have you replaced the truck yet? It could be the fuse. 1 Quote Link to comment
ggzilla Posted April 25, 2014 Report Share Posted April 25, 2014 The fuse is not located there. 1 Quote Link to comment
jvb5577 Posted April 25, 2014 Report Share Posted April 25, 2014 This is why I would have stuck with an external regulated alternator.. Looks like the ground wire could be connected better or might just be the picture. I would get a multimeter and check the voltage coming out of the alternator when it is running and work your way back. EDIT: I know you say your charge like is always on but check to see if your getting a power draw out of something while your truck is off too. 1 Quote Link to comment
banzai510(hainz) Posted April 25, 2014 Report Share Posted April 25, 2014 make sure you did the JUmpers(converrsion) right as this look like a INTERNAL Volt reg alternator then buy a volt meter similar to this so you can actually monitor this on and off. simple plug into lighter http://www.equus.com/Product/3721/Battery-Monitor 1 Quote Link to comment
ggzilla Posted April 25, 2014 Report Share Posted April 25, 2014 And check the fuse. The light will come on and stay on even if the CHG fuse is out. 1 Quote Link to comment
Suckless Posted April 27, 2014 Report Share Posted April 27, 2014 Check all fuses. > Check for current drain with the truck off. > If there is any drain, disconnect the choke heater relay (closest to firewall/passenger side.) > Check for drain again. >Find alternative voltage for choke (idle solendoid...red wire in same loom around carb.) What is your voltage reading while the truck is running? Don't rely on a new alternator to charge a tired battery! 1 Quote Link to comment
biker16ben Posted November 29, 2014 Report Share Posted November 29, 2014 Check the fuse.If the wrong fuse is installed with higher rating the failed reg charges at 16 + Volts and it will get the connections/connector at the reg and wires hot before the fuse blows.The connector and connections get loose after this happens.620s are known for reg failures.I think it should be a 10 amp fuse.Anything higher will cause troubles. I found this out the hard way,lol. 1 Quote Link to comment
Vanilla fudge Posted October 23, 2016 Report Share Posted October 23, 2016 Wiring seems really simple, if you know what you're doing. I don't. Saved this minitruck from some people, but the alternator wires got fried. You can push start her runs great. I seriously need help though, my alternator looks just like the one shown above, and im pretty sure even on his there is a fourth wire connector on the left side. mine has 4 wires coming off the alternator and I don't have a clue where each one should go 1 Quote Link to comment
datzenmike Posted October 23, 2016 Report Share Posted October 23, 2016 Easy... The White/Red stripe is the output and is connected to an insulated terminal post The Black wire is the ground. It can be attached pretty much anywhere on the case. In some instances there is a second wire going to the block for extra assurance that it is grounded. The plastic plug Has two wires arranged in a T as shown. The White/Black stripe (sometimes White/Red stripe on the 620) is the Red charge lamp in the dash that comes on with the key and goes out when the alternator is charging. The Yellow goes to the external voltage regulator. Just find these wires on your harness, repair them and connect them up. 1 Quote Link to comment
red13 Posted October 24, 2016 Report Share Posted October 24, 2016 What year 620? Depending on the year you could swap over to a internal regulated alternator and bypass the external regulator with a plug thats out there 1 Quote Link to comment
racerx Posted October 24, 2016 Report Share Posted October 24, 2016 is this going on because the original post was over 2 years ago.? 1 Quote Link to comment
red13 Posted October 24, 2016 Report Share Posted October 24, 2016 is this going on because the original post was over 2 years ago.? That would suck if it was Quote Link to comment
datzenmike Posted October 25, 2016 Report Share Posted October 25, 2016 What year 620? Depending on the year you could swap over to a internal regulated alternator and bypass the external regulator with a plug thats out there Post #16 two days ago, his profile says '76 620 lil Hustler 1 Quote Link to comment
red13 Posted October 25, 2016 Report Share Posted October 25, 2016 Post #16 two days ago, his profile says '76 620 lil Hustler Oh ok, then the early rectangle plug voltage regulator there s a bypass plug out there. The later knowone makes one yet Quote Link to comment
datzenmike Posted October 25, 2016 Report Share Posted October 25, 2016 Just cut the plug from the regulator side and remove all the wires but the two pair that are joined. Then plug it back onto the harness plug. Has to fit. Quote Link to comment
Vanilla fudge Posted November 3, 2016 Report Share Posted November 3, 2016 My deepest apologies, I salvaged this truck from people who nearly destroyed it. The fuse block holds 6 fuses, they had 10, one fuse in-between each fuse. I still cannot tell if this is an internal or external regulated alternator, and all 4 wires coming from the alternator have either melted and been ripped out, if they were even connected, and gave been *replaced* (I've found wires to use, but am unsure exactly how to configure this) I thank you guys immensely for your help, I am stranded until I figure this out. This lil hustler runs awesome when you push start her! Quote Link to comment
Vanilla fudge Posted November 3, 2016 Report Share Posted November 3, 2016 https://drive.google.com/file/d/0By_-lxJy2w9qNnlraU1lci03REk/view?usp=drivesdk This is the alternator. Is there any chance one might know the gauge wires I should be using? Can I run the ground straight up above the alternator where the battery is grounded to the eng. Block? Quote Link to comment
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