Auto electricial question re fitting Radio/CD player
Discussion
Hi,
Have just bought a Pioneer DEH-P77MP which is a retro looking system to go in my Marcos.
My Marcos has never had a radio in before (music courtesy of the exhaust and gearbox) and the car was a track car for the first 10 years of it's life, it therefore has a battery cut off switch on the exterior of the car which is still in use, i remove the key whenever i park up or put the car away in the garage disabling the power.
I am not sure whether the Radio/CD player can be hooked up to the existing wiring loom radio fittings sitting spare behind the dash or if i need to wire in a new seperate loom with fuses straight to the battery just for the Radio/CD player missing out the battery cut off switch.
I am thinking that if i use the existing loom wiring will the Radio/CD player loose all it's settings such as station presets security code etc each time the battery cut off switch is turned off or would the Radio/CD player have it's own internal memory,
Regards,
Martyn.
Have just bought a Pioneer DEH-P77MP which is a retro looking system to go in my Marcos.
My Marcos has never had a radio in before (music courtesy of the exhaust and gearbox) and the car was a track car for the first 10 years of it's life, it therefore has a battery cut off switch on the exterior of the car which is still in use, i remove the key whenever i park up or put the car away in the garage disabling the power.
I am not sure whether the Radio/CD player can be hooked up to the existing wiring loom radio fittings sitting spare behind the dash or if i need to wire in a new seperate loom with fuses straight to the battery just for the Radio/CD player missing out the battery cut off switch.
I am thinking that if i use the existing loom wiring will the Radio/CD player loose all it's settings such as station presets security code etc each time the battery cut off switch is turned off or would the Radio/CD player have it's own internal memory,
Regards,
Martyn.
Edited by Martyn-123 on Tuesday 7th May 10:03
You should have 2 power wires, 1 constant and 1 ignition.
Wire the constant to the battery via a fuse and wire the power/ignition supply to the ignition switch also via a fuse. You won't lose everything when you remove the battery key then
ETA you can use the existing loom for the ignition supply...
Wire the constant to the battery via a fuse and wire the power/ignition supply to the ignition switch also via a fuse. You won't lose everything when you remove the battery key then
ETA you can use the existing loom for the ignition supply...
Just one other thing to add, does your battery isolator isolate the live or the earth? If its the earth you will need to run an earth back to the battery. You have to be careful when wiring up consumers/equipment on isolated systems as you can get back feeding.
A good example is if the vehicle is isolated by breaking the earth and you fit a radio and run an earth line back to the battery, if the aerial is earthed to the body and plugged in to the radio all of a sudden all the electric circiuts on the vehicle will try and earth through your radio. Your radio will not last long!
If your car is isolated by the live side then your ok to hook it up to the battery, if its on the earth side make sure everything to do with the radio is isolated.
A good example is if the vehicle is isolated by breaking the earth and you fit a radio and run an earth line back to the battery, if the aerial is earthed to the body and plugged in to the radio all of a sudden all the electric circiuts on the vehicle will try and earth through your radio. Your radio will not last long!
If your car is isolated by the live side then your ok to hook it up to the battery, if its on the earth side make sure everything to do with the radio is isolated.
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