Does anyone know what the black box is on the back of the ST204 gauges? It touches the e-brake light circuit, it is behind the diode on the e-brake circuit. And it also looks to use the ground from the turn signal indicators. Then it connects to pin A13. What is pin A13?
-Jay95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
I was wondering the same and someone told me it's a delimiter.
FS thread :Custom Celica partsmade to order + moreClick the image to visit my FB page
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QUOTE (The_enD @ Jun 22, 2014 - 12:39 AM)
>I was wondering the same and someone told me it's a delimiter.
a delimiter for what circuits?
-Jay95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
FS thread :Custom Celica partsmade to order + moreClick the image to visit my FB page
>
QUOTE (The_enD @ Jun 22, 2014 - 1:47 AM)
Thanks for the link! I just looked up in bgbonline and the wire diagram labels that little black box as "Bulb Check". So I think it has something to do with when the car is turned on and all of the bulbs light up. It uses the ground on the turn signal circuit, positive from the diode on the brake indicator circuit, and the circuit that leaves the gauges on pin A13 goes straight to the Neutral safety switch in A/T and to the clutch switch in M/T. I don't know what it does, but I put my gauges in before I found this out and drove around without the black box connected. I had no bulbs in the gauges because I didn't know it had to do with the bulb check, but now I know. I think the BEAMS gauges have the same but it is a gray box. My A/T BEAMS gauges only have two pins on the gray box, one that connects to the shift indicator lights and the ground from the turn signal circuit. How are the M/T BEAMS gauges set up? same gray box?
-Jay95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
