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Old 12-16-2014, 11:53 AM   #1 (permalink)
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Default gauges NOT working... bad ground?

Gauge lights work and dim.
Needle is all the way down
i do have power B+ to the tach

i tested the water temp (YELLOW/WHITE) wire, grounded it out, and nothing on the needle in the on/start position.

It did work before... i unplugged a few things to take the dash out to put in my roll cage and then this happened....

Last edited by JonnyK; 12-16-2014 at 12:01 PM.
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Old 12-16-2014, 05:35 PM   #2 (permalink)
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there are two set ribbon connectors back of console make sure they are seated correctly.
and check the fuses...kind of obvious but you never know.
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Old 12-16-2014, 06:16 PM   #3 (permalink)
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did check all the fuses....

i recently did an GM 3 wire alternator swap.... maybe fried something.....
#1 (W) went to W\R
#2 (R) went to Bat (+)
B/W wire is disconnected
W\Y is to the + Pos
Additional wire from + Post to Batt

In the OFF position, the BW (tach) is (NEG) and when switch to the ON position, its (POS). Is that normal??

I tried this:
https://www.suzuki-forums.com/suzuki-...tml#post312357

But both Water(Y\W) & Oil sensors(Y\ have a (NEG) charge without grounding....
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Old 12-17-2014, 06:32 AM   #4 (permalink)
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First - learn to use your meter - in a Samurai, the battery negative is grounded - that is your reference, and there is no circuit that can be negative with respect to ground.

Presumably when you say gauge lights are dim you are referring to the gauge illumination and not warning lights - assuming that the vehicle is not fitted with a dimmer control, this would most likely be a bad ground - so start there.
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Old 12-17-2014, 09:45 AM   #5 (permalink)
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i did look through all my ground.... i have NO idea what i disconnected....
Maybe if i posted some pics....
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Old 12-17-2014, 10:13 AM   #6 (permalink)
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By all means post the pics - someone familiar with them might see something - I've never worked on the Samurai electricals, so I wouldn't be able to tell if anything was out of place.

Go to Ack's FAQ, get yourself a wiring diagram - the Samurai is negative ground, and the majority of circuits used are switched in the supply or positive feed - the exception is the head lights, which have the switch in the ground circuit - but - since you haven't mentioned a headlight issue, I assume we're not troubleshooting that circuit.
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Old 12-17-2014, 07:03 PM   #7 (permalink)
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I have a silly suggestion...put back in the old alternator and see if the issue resolves.
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Old 12-18-2014, 06:31 AM   #8 (permalink)
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That's actually not so silly - anyone know what the black/white wire that was left disconnected does? Here's a hint - IG.
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Old 12-18-2014, 08:40 PM   #9 (permalink)
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i know it goes tot the ignition..... i left it disconnected on purpose as it didnt need to be connected to the #2 (RED) on the alternator. I connected the #2 to the Alternator + Post
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Old 12-19-2014, 09:29 PM   #10 (permalink)
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Quote:
Originally Posted by fordem View Post
That's actually not so silly - anyone know what the black/white wire that was left disconnected does? Here's a hint - IG.

I installed the OLD alternator, and nothing on the gauges.


NO Charge on the battery either, sits on 12.6. had it tested and the guy at autozone tested it good.

WY going to + post
4 gauge cable from alternator + post to battery
Sensor wire going to BW
L going to WR
***This is the 4 wire

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