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Battery cables? I would try running at least a thicker charge wire straight to the battery. I can't speak on that harness though.the whole truck is rewired with a speedway harness. The charge wire looks like 10 gauge maybe a little bigger
Idle should be around 750. It should just need an exciter wire and a charge wire. What's the wiring harness setup for the alt? Wired in properly? There's nothing else to the system. If the belt is squealing there has to be something wrong with alt. Did it squeal before? Tensioned enough?With just the regular headlights on I’m getting 13.1-13.27 volts at 500 rpm idle and 14 volts at 2500 rpm
You can't accurately check the resistance in that wire with an ohmmeter. If every strand of wire in it is broken except one, it will still test ok. To do an accurate test you need to check voltage drop on the circuit with approximately a 20 amp load.It doesn’t matter if I have the trigger wire plugged in or not, it won’t charge. This one was a brand new one from db electrical. I’m going to have my old alternator tested, I measured the resistance in the battery wire going to the alternator and it’s 0.01 ohms.
Ok throwing in a question. I just put a reman CS130 in my 91 burb. With the lights and AC (only front rear ac not hooked up) the idle drops and lights dim a little. The voltage drops to 12.7ish at idle, and floats between 13 and 14.2 while driving . I don't have a tach but think she idles too low with AC. As far as voltage does this sound right? I will be going through ground and hot wire connections once this southern heat breaks. Last truck was a 76 k30 no AC and had no real charging variables so not sure on the "newer" truck. Thanks in advanceI have little to add to the discussion other than no alternator is going to keep up with that load at 500RPM idle. If you wanna run that low of an idle go for it. But your not going to charge or will charge very poorly at that RPM. Your A/C if you have it will suck at that RPM.
My answer is, it sounds ok. It's possible that it's not idle air control valve isn't compensating for the addition load as well as it should, but by your numbers it's charging just fine going down the road ok.Ok throwing in a question. I just put a reman CS130 in my 91 burb. With the lights and AC (only front rear ac not hooked up) the idle drops and lights dim a little. The voltage drops to 12.7ish at idle, and floats between 13 and 14.2 while driving . I don't have a tach but think she idles too low with AC. As far as voltage does this sound right? I will be going through ground and hot wire connections once this southern heat breaks. Last truck was a 76 k30 no AC and had no real charging variables so not sure on the "newer" truck. Thanks in advance
Ok throwing in a question. I just put a reman CS130 in my 91 burb. With the lights and AC (only front rear ac not hooked up) the idle drops and lights dim a little. The voltage drops to 12.7ish at idle, and floats between 13 and 14.2 while driving . I don't have a tach but think she idles too low with AC. As far as voltage does this sound right? I will be going through ground and hot wire connections once this southern heat breaks. Last truck was a 76 k30 no AC and had no real charging variables so not sure on the "newer" truck. Thanks in advance