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Hate to post this question, but I have read through multiple "how to" threads and researched online.
I have an autometer 4777 boost gauge. As per autometers instructions the power wire should be connected to a power source that is only on when the ignition switch is turned to the "on" position and is not interrupted by the ignition switch starting. Like most accessories are... I have tried all the normal fuse locations and they are either a constant on or are interrupted for starting. Any suggestions which fuse will not be interrupted during starting?
Tia.
"8. Connect the red power wire to a switched +12 volt source that maintains power during engine cranking. Most vehicles break the electrical
connection to accessories while the engine is being started. If the boost gauge is connected to one of these circuits, the auto zero function will not work properly and inaccurate readings will result. To determine whether a switched source maintains power during starting, look for electrical accessories in the vehicle that remain on while the engine is being started. Connect the red power wire to the same circuit that powers one of these accessories. The connection can be tested by turning the key switch from off to on, the pointer will move backward to the stop pin and then move to zero. Once the pointer has reached zero, start the engine. If the pointer reads vacuum without returning to the stop pin, a suitable connection has been found. If the pointer moves to the stop pin and then reads vacuum, another power circuit must be found."
I have an autometer 4777 boost gauge. As per autometers instructions the power wire should be connected to a power source that is only on when the ignition switch is turned to the "on" position and is not interrupted by the ignition switch starting. Like most accessories are... I have tried all the normal fuse locations and they are either a constant on or are interrupted for starting. Any suggestions which fuse will not be interrupted during starting?
Tia.
"8. Connect the red power wire to a switched +12 volt source that maintains power during engine cranking. Most vehicles break the electrical
connection to accessories while the engine is being started. If the boost gauge is connected to one of these circuits, the auto zero function will not work properly and inaccurate readings will result. To determine whether a switched source maintains power during starting, look for electrical accessories in the vehicle that remain on while the engine is being started. Connect the red power wire to the same circuit that powers one of these accessories. The connection can be tested by turning the key switch from off to on, the pointer will move backward to the stop pin and then move to zero. Once the pointer has reached zero, start the engine. If the pointer reads vacuum without returning to the stop pin, a suitable connection has been found. If the pointer moves to the stop pin and then reads vacuum, another power circuit must be found."
