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Grega
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melbourne.victoria.austra...
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June 2002
 
wiring new gauges... Sun, 21 December 2003 08:54 Go to next message
as some of you may know, i'm changing my TA22 fuel gauge, temp gauge, idiot light and charge light for some autometer gauges

so i neatly wire in and heatshrink my wiring as you do.

put the dash in start screwing it in and think, better test it just in case.

well the fuel gauge didn't work at all, the oil pressure went off to about 150psi and my 4AGE was running at well over 250 degrees F.

so i think strange. the fuel gauge worked before when it was in another place.

checked voltage at back of gauges - 2.94v on the +12v....WTF?

tried different places for +12v - same shit.

tried different ground - same shit.

lastly i removed each gauge and one at a time hooked it up to a constant +12v. works FINE.

i'm thinking it HAS to be something with my wiring. being the following :

the first gauge +12v post leads to the next and to the next and to the next and then off to source of the +12v. the same for the -12v - post to post to post to post to source of -12v.

i've wired lots of shit in my life but never come up across this before. any ideas? the gauges are OK when wired seperately no issues there. but is it coz i wired them like in parralel(sp) when they should have been something different from what i did which was :

+12v source---+12v fuel---+12v oil---+12v water---+12v AFR

thoughts/helps/comments/flames - all welcome. remember i'm not an electronics expert.

[Updated on: Sun, 21 December 2003 08:54]

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clancey
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July 2002
Re: wiring new gauges... Sun, 21 December 2003 09:13 Go to previous messageGo to next message
How are you grounding? I'd try grounding the gauges to something metal on the dash, if you are using an existing wire.

You seem to be running them correctly, as they do need to be in a parallel configuration. Could you try running them straight to the battery together to ensure that it is a problem with the wiring and not a bad supply through the old harness wires.
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Grega
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Re: wiring new gauges... Sun, 21 December 2003 18:56 Go to previous messageGo to next message
yeah, they're grounded to the underside of the dash.

i think i'll get a good solid supply straight out of back of the fuse panel and relay it with a fuse actually
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clancey
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July 2002
Re: wiring new gauges... Sun, 21 December 2003 21:49 Go to previous messageGo to next message
Makes sense, i was only suggesting the other for testing, not a permanent solution Smile
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Grega
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Re: wiring new gauges... Mon, 22 December 2003 09:07 Go to previous messageGo to next message
bloody ground wire.

and the worst part was - it was the actual wire i'd used that had a break in it. farkin ell.
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boris
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Re: wiring new gauges... Mon, 22 December 2003 09:12 Go to previous messageGo to next message
so you got it working? Smile
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oldcorollas
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January 2003
 
Re: wiring new gauges... Mon, 22 December 2003 11:22 Go to previous messageGo to next message
Grega wrote on Mon, 22 December 2003 20:07

bloody ground wire.

and the worst part was - it was the actual wire i'd used that had a break in it. farkin ell.



LOL, so it was a.....

BAD EARTH

Laughing Very Happy
i hate electrical problems....
glad you found it Very Happy

so, do we chalk this one up to Cool1 even tho he's not here??
Cya, Stewart
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Grega
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Re: wiring new gauges... Mon, 22 December 2003 19:07 Go to previous messageGo to next message
yes bad earth.
i still can't believe the wire. wtf?

agree hate electrical problems too. this one had me - learn for next time.

i tell you what though its a shitful sinking feeling thinking you've destroyed $600 worth of autometer shit. fark.
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clancey
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July 2002
Re: wiring new gauges... Mon, 22 December 2003 22:07 Go to previous messageGo to next message
Oh well sorted now.

If they were stuffed that's what warranties are for, just make sure you return them one at a time, a week apart and to a different salesperson every time Smile
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waynewatson
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May 2003
Re: wiring new gauges... Tue, 23 December 2003 00:50 Go to previous messageGo to next message
So, did you end up running ground wires back to near the senders, or just as close as possible to the gauges?
The instructions for mine say to try to ground as close as possible to the sender (probably for accuracy), but i think the difference would be noticable.
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Grega
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Re: wiring new gauges... Tue, 23 December 2003 01:23 Go to previous messageGo to next message
nah i just picked up a ground from the original gauges.
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oldcorollas
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Location:
Kita-Ku, Sapporo, Japan
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January 2003
 
Re: wiring new gauges... Tue, 23 December 2003 04:42 Go to previous messageGo to next message
good thing you managed to find it... i can't even remember the number of times i've put brand new wire (for various things) in and had a break in the NEW wire.... kinda scary really...

Shocked i can only barely imagine!!! something similar to seeing smoke come out of a new aftermarket ECU?? Wink

so. when will you have pics Wink Very Happy
Cya, Stewart
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Grega
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melbourne.victoria.austra...
Registered:
June 2002
 
Re: wiring new gauges... Tue, 23 December 2003 05:01 Go to previous message
don't even JOKE about that with an aftermarket ECU, fuck, that murphy dude has been replaced with ME. call it gregas law!!!!

pix.....um yeah

http://www.vncommodore.com/images/celica/ta22dash039.jpg

don't look too bad if you ask me....ps: they all work too now with a decent ground....

and yes i do have two AFR gauges....don't ask.

[Updated on: Tue, 23 December 2003 05:03]

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