66 Nova update

[kwhizz]

Finally got the new harness from Holley......Before I put it in I took the Alternator back to the Alternator shop to be checked out again....when he put it on the test rig and hooked it up with a standard 4 pin plug everything checked out O K except he said the red light didn't come on before he started the test......I asked what red light, he replied that it was the red light in the dash cluster that turns off when the alternator starts charging and if it quits working in a normal dash the light would come on and let you know it wasn't charging.......After thinking about it with my limited knowledge about how these things work I thought that maybe there was a problem with internal regulator in the alternator.......So... When I re-installed the alternator and put in the new harness and it still didn't charge.........I called Holley and asked if I could order a new regulator just to see if that was the issue......I was told they don't sell replacement parts......So.... I ordered a new Alternator.....Should be here tomorrow...Just want the problem to go away as I am sick of this simple problem that is so complicated..Got my fingers crossed

[ScotI]

Originally Posted by kwhizz

Finally got the new harness from Holley......Before I put it in I took the Alternator back to the Alternator shop to be checked out again....when he put it on the test rig and hooked it up with a standard 4 pin plug everything checked out O K except he said the red light didn't come on before he started the test......I asked what red light, he replied that it was the red light in the dash cluster that turns off when the alternator starts charging and if it quits working in a normal dash the light would come on and let you know it wasn't charging.......After thinking about it with my limited knowledge about how these things work I thought that maybe there was a problem with internal regulator in the alternator.......So... When I re-installed the alternator and put in the new harness and it still didn't charge.........I called Holley and asked if I could order a new regulator just to see if that was the issue......I was told they don't sell replacement parts......So.... I ordered a new Alternator.....Should be here tomorrow...Just want the problem to go away as I am sick of this simple problem that is so complicated..Got my fingers crossed

Is the Holley stuff proprietary & not GM late model based so you could use a local parts store alternator or regulator?

[kwhizz]

Originally Posted by ScotI

Is the Holley stuff proprietary & not GM late model based so you could use a local parts store alternator or regulator?

I don't know, but I'm going to go back to the alternator shop today and have him take it apart and see.......If he can use one off the shelf and it works I will send the new one back.......

With all the issues I had with this swap and this simple issue (which should be a Non-Issue) ended up being the biggest and most time consuming problem...

[dhutton]

Are you referring to the Holley alternator harness that is a single yellow wire? It’s just a simple 270 ohm resistor if it is. The other end should be connected to switched 12 volts. You can test the harness with an ohmmeter. It should read 270 ohms between the two ends of the yellow wire.

Don

[kwhizz]

Originally Posted by dhutton

Are you referring to the Holley alternator harness that is a single yellow wire? It’s just a simple 270 ohm resistor if it is. The other end should be connected to switched 12 volts. You can test the harness with an ohmmeter. It should read 270 ohms between the two ends of the yellow wire.

Don

Finally figured it out.....Took the Alternator to the shop again along with the Holley harness ........ he used the Holley harness added 12 volt power to the harness......put the alternator to the test and Bingo 15 volts...Again he asked me how I had it wired up......told him keyed 12 volt power right into the harness...With the key on the connection check 12 volts into the harness.....So...He tells to check everything in the failed condition......Checked again (12 Volts) and started the car.....No charging so I check the voltage at the harness connection and it said "0" volts......ended up the wire I tied into had 12 volts power till the engine started then it dropped power......Don't know how or why......I changed to a different keyed power source and started the car and Bingo....15 volts.....everything is working perfectly now.......Sheesh !!!!!!!.... Drove the car about 50 miles and temp stayed at 185 and alternator charged perfectly......This Car stuff is hard sometimes........LOL

[camcojb]

[dhutton]

For future reference any pink wire will be ignition switched 12 volts.

Don