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Not sure if this will help......
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Originally Posted by poorman212
(Post 290067)
Not sure if this will help......
Any ideas on why I'm only getting 9 volts instead of 12? |
one common reason for measuring low voltage is poor grounding. voltage is relative, and with increased ground resistance, you will measure lower voltage.
the ignition wire should have 12V when the car is on. if that also measures 9 volts then you have a grounding issue. |
Originally Posted by keep_hope_alive
(Post 290820)
one common reason for measuring low voltage is poor grounding. voltage is relative, and with increased ground resistance, you will measure lower voltage.
the ignition wire should have 12V when the car is on. if that also measures 9 volts then you have a grounding issue. I've been trying to find grounds to check, there is an ECU ground that is supposed to connect to the engine block around the upper radiator hose. I cannot find this ground, does anyone know its location on a 93 Accord LX? Would this ground affect the radio/clock? Again, thanks for any help! |
Where are you measuring the voltage? where is the black DMM lead? you say that the WHT/YEL has 9V? If so, I would suspect a bad 7.5A fuse/connection.
If you disconnect the Kenwood, does the voltage on WHT/YEL increase to 14V also? https://www.hondaaccordforum.com/for...-gen-radio-jpg |
Originally Posted by keep_hope_alive
(Post 293271)
Where are you measuring the voltage? where is the black DMM lead? you say that the WHT/YEL has 9V? If so, I would suspect a bad 7.5A fuse/connection.
If you disconnect the Kenwood, does the voltage on WHT/YEL increase to 14V also? https://www.hondaaccordforum.com/for...-gen-radio-jpg |
wow. there is no reason you should measure 9.7VDC on that wire (with the plug disconnected) unless there is a problem up-stream. like a bad connection at the fuse box.
bypass that wire - assume it is bad. pull that fuse. run a new wire from the battery to your HU, with an inline fuse at the battery. 12AWG wire with a 20A fuse is sufficient. |
Originally Posted by keep_hope_alive
(Post 293292)
wow. there is no reason you should measure 9.7VDC on that wire (with the plug disconnected) unless there is a problem up-stream. like a bad connection at the fuse box.
bypass that wire - assume it is bad. pull that fuse. run a new wire from the battery to your HU, with an inline fuse at the battery. 12AWG wire with a 20A fuse is sufficient. |
HU = head unit = radio.
from the new radio's yellow (battery) wire to the battery. |
Or as an alternative to running a new wire directly from the battery, you can use an "Add-a-circuit" to plug into an unused slot in the driver's side fuse box to power the radio.
http://www.littelfuse.com/data/en/Da...FHM02FHA02.pdf |
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