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Thread: Voltage gauges
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10-23-2017, 08:11 PM #1
The Nitrous Outlet Junkie
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Voltage gauges
.... okay so after deleting the PCM because I went carburetor. The only thing that works on my gauge cluster is the fuel level and we all know have accurate those are lol .... so I took the plug for the alternator off the wiring harness and I was going to connect that to a voltage gauge. When I did that I didn't get any voltage reading at all if I check at the post I see 12 volts ... so I know this is probably a stupid question but to get the voltage gauge working.
can I just go off the battery or does it have to come off the alternator? Today I removed it and took it to an auto parts store to have it tested and it tested fine
Sent from my SM-N910T using Tapatalk94 Formula "budget build" #thebeaterbird
10.177 @128.31 on a lil 250 shot
350, LT1, carb, LE grind cam, th400, 4k stall, ford 8.8 w/ 4.10s
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10-23-2017, 08:13 PM #2
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pretty sure your alternator needs a gauge in line or a resistor to charge without the pcm on the exciter wire
Originally Posted by zooguy
Sent from my SAMSUNG-SM-G935A using Tapatalk2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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10-23-2017, 10:19 PM #3
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You could wire it to the same wire on your ignition switch that go to the coil. So it will only be on with the key.
... on my tablet using Taptalk
1995 Trans Am - CAI - TB coolant bypass - Headers & Performance Muffler - Poly mounts - stock LT1/A4 - 13.3 1/4 - 1.9 60 foot , driven daily.
2008 C6 Corvette LS3 Snake charmer Ram Air intake. 6 Speed Switchable mild to wild exhaust.
2002 Silverado LT Extd Cab Z71 5.3 A4 Composite Bed Stock
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10-24-2017, 07:35 AM #4
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470 ohm resistor inline to the battery or ignition hot. Originally Posted by Tubby Z28
Correlation does not imply causation.
Una salus victis nullam sperare salutem
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10-24-2017, 10:18 AM #5
LTx Guru
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Here's the wiring diagram. If you still have the stock cluster the volts gauge should still be working. Check the "Gages" fuse.
http://shbox.com/1/starter_charging_95.jpgSOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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10-24-2017, 11:14 AM #6
The Nitrous Outlet Junkie
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I'll check it when I get home but I'm pretty sure that the fuses good. I want to be able to monitor my voltage in case something happens of course.
But now I'm beginning to wonder will the alternator do its job if its connected with the wire on those back going to the battery
And the single wire going into the plug not hooked up
Sent from my SM-N910T using Tapatalk94 Formula "budget build" #thebeaterbird
10.177 @128.31 on a lil 250 shot
350, LT1, carb, LE grind cam, th400, 4k stall, ford 8.8 w/ 4.10s
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10-24-2017, 12:10 PM #7
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that's what we are telling you, either hook a gauge or resistor to the single wire and power, otherwise it won't charge Originally Posted by zooguy
Sent from my SAMSUNG-SM-G935A using Tapatalk2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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10-24-2017, 12:53 PM #8
The Nitrous Outlet Junkie
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Okay ... sorry :/ .... I'm still not quite understanding. .... so how should it be wired ...I am having problems reading the wiring diagram posted ... can yall please post a simple one .... maybe drawn in crayons?
Sent from my SM-N910T using Tapatalk94 Formula "budget build" #thebeaterbird
10.177 @128.31 on a lil 250 shot
350, LT1, carb, LE grind cam, th400, 4k stall, ford 8.8 w/ 4.10s
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10-24-2017, 01:28 PM #9
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Looks like there's a terminal marked L on the back of the alt that goes to stock cluster and your not using that right?
on the phone using Tapatalk
1995 Trans Am - CAI - TB coolant bypass - Headers & Performance Muffler - Poly mounts - stock LT1/A4 - 13.3 1/4 - 1.9 60 foot , driven daily.
2008 C6 Corvette LS3 Snake charmer Ram Air intake. 6 Speed Switchable mild to wild exhaust.
2002 Silverado LT Extd Cab Z71 5.3 A4 Composite Bed Stock
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10-24-2017, 01:32 PM #10
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battery positive to switch, other side of switch to resistor or gauge, then to that little wire with plug into alternator. it's not that hard, there's no fuses or relays inline Originally Posted by zooguy
Sent from my SAMSUNG-SM-G935A using Tapatalk2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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