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#85203 08/16/2004 2:56 PM | Joined: Oct 2000 Posts: 244 'Bolter | | 'Bolter Joined: Oct 2000 Posts: 244 | I have a 1953 GMC and the ignition switch is just an on-off keyed switch. The back of the switch has the following letters B, I, A what do these stand for? Is it as simple as B-battery, I-ignition, and A-accessory. I appreciate any help as I was going to tap into the fuse block but the brake fuse is always hot and the tail light is only on with the headlight switch. | | |
#85204 08/16/2004 3:06 PM | Joined: Mar 2001 Posts: 259 Member | | Member Joined: Mar 2001 Posts: 259 | Yes the B is for Battery, (I) ignition and (A) accessory. You can test the switch just to be sure by connecting a full time power supply to the (B) terminal on the key and they turning the switch to the on position which should give you current to the (I) terminal. Turn the switch to the accessory position will give you current to the (A) terminal and nothing to the (I) terminal.
The brake fuse is full time battery supplied current so it will be hot all the time.
Joe
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