http://cgi.ebay.com/ebaymotors/ws/eBayISAP...N:IT&ih=016

I just bought these gauges from ebay, seemed simple enough I took apart my dash and eveything and I tried and looked evrywhere but i couldnt figure out what the plugs at the end of each gauge went into? Like theres a wire coming out of every gauge then a little plug at the end of it and when i took my old one apart i saw all it was is a stick on gauge with light bulbs underneath.. anyone know where those things plug into pleazse post..thnks.
p.s i have a 94 celica st

connect them to your transformer...you should get a transformer, a dimmer control and the gauges.

I have used a dimmer control...

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how will that help?

looks like they have a dimmer control box? they should all plug into that little box that says TRD then that goes into a reg 12v power source but you want to plut it into the accessory wire so its only on when the car is.

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with a transformer like that for that price i'll buy 10...
by the way if you want it to lights up only when your headlights are on then connect it to the headlight wires...either way will do just fine.