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LED light modification
#11
(02-13-2018, 11:44 AM)Stanglover Wrote:
(02-13-2018, 10:42 AM)Danno Wrote:
(02-12-2018, 08:09 PM)midlife Wrote: Do NOT replace your alternator indicator lamp with an LED: you need an incandescent to make the charging circuitry work correctly.

While I have the dash out, I intend to try to find out why my alt light never worked. I originally just inserted a 194 bulb in the hole for the light, but found out that it's a separate pigtail and different bulb. I think I remember a mystery wire and socket hanging loose back there, and if I remember correctly also the socket is broken...........

 Midlife will confirm, but I think somebody 'mickey moused' it. It should be part of the printed circuit board thingy. May need a replacement.

71/72 was part of the circuit board; 73 the lamp is integral to the underdash harness.  Don't you love year-to-year changes?
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#12
(02-13-2018, 01:21 PM)midlife Wrote:
(02-13-2018, 11:44 AM)Stanglover Wrote:
(02-13-2018, 10:42 AM)Danno Wrote: While I have the dash out, I intend to try to find out why my alt light never worked. I originally just inserted a 194 bulb in the hole for the light, but found out that it's a separate pigtail and different bulb. I think I remember a mystery wire and socket hanging loose back there, and if I remember correctly also the socket is broken...........

 Midlife will confirm, but I think somebody 'mickey moused' it. It should be part of the printed circuit board thingy. May need a replacement.

71/72 was part of the circuit board; 73 the lamp is integral to the underdash harness.  Don't you love year-to-year changes?
 That's something I did not know on 73's. Not my fav year anyway! Danno has a 72, so someone messed it up for sure.
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#13
(02-13-2018, 02:13 PM)Stanglover Wrote:
(02-13-2018, 01:21 PM)midlife Wrote:
(02-13-2018, 11:44 AM)Stanglover Wrote:  Midlife will confirm, but I think somebody 'mickey moused' it. It should be part of the printed circuit board thingy. May need a replacement.

71/72 was part of the circuit board; 73 the lamp is integral to the underdash harness.  Don't you love year-to-year changes?
 That's something I did not know on 73's. Not my fav year anyway! Danno has a 72, so someone messed it up for sure.

So what I understand "now", is that the alt warning light is in fact just a standard 194 bulb inserted in a twist socket like the rest of the bulbs, and NOT a separate wire ("pigtail") and socket that is then inserted into the hole in the circuit board? Maybe that mystery wire/socket is for the headlight bezel that also never worked.........
Am I looking at a new circuit board if I want the alt light to work then? Maybe I have a '73 under dash harness, LOL! Huh
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#14
so midlife I have another ? If you have a tach you don't have the warning light, soooooo what if anything should I worry about for the voltage regulator?
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#15
(02-21-2018, 11:27 PM)libram Wrote: so midlife I have another ? If you have a tach you don't have the warning light, soooooo what if anything should I worry about for the voltage regulator?

Nothing to worry about.  The VR has a different wiring scheme that takes care of things.  If you have an ammeter, you're golden.  Even if you replace the ammeter with a volt-meter, you're still golden as long as you retain the gauge-configured alternator harness.
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#16
sweet ty
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#17
(02-13-2018, 01:21 PM)midlife Wrote:
(02-13-2018, 11:44 AM)Stanglover Wrote:
(02-13-2018, 10:42 AM)Danno Wrote: While I have the dash out, I intend to try to find out why my alt light never worked. I originally just inserted a 194 bulb in the hole for the light, but found out that it's a separate pigtail and different bulb. I think I remember a mystery wire and socket hanging loose back there, and if I remember correctly also the socket is broken...........

 Midlife will confirm, but I think somebody 'mickey moused' it. It should be part of the printed circuit board thingy. May need a replacement.

71/72 was part of the circuit board; 73 the lamp is integral to the underdash harness.  Don't you love year-to-year changes?

My bad; 71 only was part of the circuit board; 72/73's were integral to the underdash harness.  10 lashes with a ground strap to Midlife, please! Jawdrop Slap Stickwhack Imsorry
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#18
(02-25-2018, 07:59 PM)midlife Wrote: My bad; 71 only was part of the circuit board; 72/73's were integral to the underdash harness.  10 lashes with a ground strap to Midlife, please! Jawdrop Slap Stickwhack Imsorry

  !0 lashes for me too, I always thought that 71-72's were pretty much the same car other than engine downgrades after June-July 71 [or] when the " Cobra Jet'" Q codes came in.
Again, I learn every day!
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