No "BRAKE" light when E-brake is set
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Joined: Jul 2003
Posts: 12,177
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From: Newport, WA
No "BRAKE" light when E-brake is set
Could just be the bulb in the dash is burned out, switch seems okay. Since my truck is an auto I never use the e-brake, but the AIC I installed requires the e-brake to be set before it can do it's thing. Where to start troubleshooting?
Hook it, I'll pull it.
Joined: May 2007
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From: Grand Lake, La.
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Joined: Jul 2003
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From: Newport, WA
I think the AIC relys on the bulb, not the switch. I didn't volt test the switch... it's a single wire jobber and the switch actually moves when the brake is pressed so I assume it's fine... didn't check fuses 
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Joined: Jul 2003
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From: Newport, WA
No idea Rick. I'll have to mess around with it when I get home. I'm half tempted to have someone on one of the other forums I frequent play with his AIC and figure out what tells the AIC the brake is set and mod the thing to think the e-brake is always on.
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
Good idea, you could alway use it as a cruise control.
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From: VA
Ill share some insight I have. In dash tv's I used to install would usually have a wire that needed to be connected to the e-brake to make sure you werent driving while watching the screen. I used to wire it up so they could watch it while driving but only if they forgot where they bought it!
I wired the "wire" to the chassis ground wire in the harness and that was that. It only needed to be grounded to work. Im pretty sure they are working off the same principal.
I wired the "wire" to the chassis ground wire in the harness and that was that. It only needed to be grounded to work. Im pretty sure they are working off the same principal.
Thread Starter
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Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Ill share some insight I have. In dash tv's I used to install would usually have a wire that needed to be connected to the e-brake to make sure you werent driving while watching the screen. I used to wire it up so they could watch it while driving but only if they forgot where they bought it!
I wired the "wire" to the chassis ground wire in the harness and that was that. It only needed to be grounded to work. Im pretty sure they are working off the same principal.
I wired the "wire" to the chassis ground wire in the harness and that was that. It only needed to be grounded to work. Im pretty sure they are working off the same principal.
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Joined: Sep 2008
Posts: 3,220
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From: VA
Thats what I did with the car stereo stuff. Im pretty sure the e-brake just creates a ground and completes the circuit, thus usually lighting up the bulb. It could be the other way around as well, but I doubt it. I know Jim does have access to the wiring diagrams so you might want to hold off just in case. I cant ever get into that site anymore!
I also dont know if there is some switch that you use to activate the AIC or if that ground activates it. If the e-brake would be used to activate it, I would hook it to the e-brake!
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Joined: Jul 2003
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From: Newport, WA
AIC plugs into a factory plug under the dash... in order to "activate" it you have to be in park with the e-brake set (or in neutral with e-brake set for a handshaker) with the light in the dash on... no light = no AIC function. It turns on and displays rpm and voltage, but won't activate any of the high idle programs w/o the light. I'd really like to figure out what inside the AIC tells it the brake is set, and solder a resistor or whatever is needed in so that it always thinks the brake is set.