Need help wiring volt gauge

D

Doug Chahoy

Royal Smart Person
Nov 21, 2016
1,055
113
I installed a new Painless add on fuse box, simple, even for me. Ran a 20 volt ignition hot wire to my volt gauge, grounded to the firewall. All I get when i turn on the ignition is another blown fuse. WTF am I doing wrong? The box only has 20 volt fuses BTW
 
pagrunt

pagrunt

Comic Book Super Hero
Sep 14, 2014
4,010
113
Shelocta, Pa
It should have a key hot circuit for the gauges like the OE harness. If they are following GM colors you'll be looking for a pink wired circuit representing the 39 curcuit that powers the gauges. Look at the leads for the gas gauge & tap into the fused power & ground wires as they should have the the fused power, ground, sender signal wires marked as GM did. Don't sound like it's a pain less harness as their name applies.
 
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D

Doug Chahoy

Royal Smart Person
Nov 21, 2016
1,055
113
Which fuse it blowing? That's where the problem is.

What the hell are 20 volt wires and fuses?
You pointed out my error, I should have said 20 amp. At 65 years old and only on my 1st cup of coffee that early in the morning I feel a pass is due. LOL
 
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Doug Chahoy

Royal Smart Person
Nov 21, 2016
1,055
113
So, which fuse is blowing?
I ran it from the new box. There is no actual designation on the box other than being 20 AMP and on the ignition hot side.
 
D

Doug Chahoy

Royal Smart Person
Nov 21, 2016
1,055
113
Oh boy. Just pull it apart, and double check everything. Unhook it from the gauge, and see if it still blows.
It doesn’t blow till I hook up the gauge. I have a test light that I check the circuit every time I put in a new fuse and it lights.
 
melloelky

melloelky

Royal Smart Person
Oct 22, 2017
1,156
113
mass
use that test light in place of that gauge,if it doesn't blow using the light as "the gauge"then the gauge is @ afault.
 
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D

Doug Chahoy

Royal Smart Person
Nov 21, 2016
1,055
113
use that test light in place of that gauge,if it doesn't blow using the light as "the gauge"then the gauge is @ afault.
Done that already. Have power at the connection until the gauge gets hooked up. Guess I buy a new gauge. I’m just so inexsperienced at this stuff, I figured I did something wrong.
 

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