Hi,

 

Following on from a previous thread I posted regarding an external GPS antenna I have another question. This one is Head Unit/Amplifier specific.

 

(1) The Head Unit (HU) I've got uses one single RCA connector per speaker (ie, one RCA for "front left", one RCA for "front right", and so on. I will be using a pair of competition speakers powered by a suitable amplifier at the front of the car. At the moment I am undecided as what to do with the rear speakers as I only really need staging at the front of the car (btw - this is not a Zed). The amplifier requires a Line-IN feed from the HU. Am I correct in assuming that I can connect the "front left" RCA on the HU to the "L" line in on the amp and the "front right" RCA on the HU to the "R" line-in on the amp? The HU has a 65W Mosfet amplifier it self but the speakers are rated at 400W and I'd like to have the clear definition you can only really get when using an amp.

 

(2) When connecting all the wires coming out the back of the HU, everything is neatly connected via an ISO block with exception of two wires: pink and an orange wire. In the "Engrish" instruction manual it indicates that the orange wire goes to the rear view camere (I'm assuming it's a power feed as there is a separate RCA camera IN on the HU) but the pink one should go to "BRAKE"??? I have no idea what they mean by that - anyone have a clue?

 

(3) Remote amp turn on. The amplifier requires a REMOTE start up connection. Is this the "power antenna" wire coming off the HU and can I splice into it to power both the antenna AND turn on the amp?

 

Thanks for your time; Your feedback is much appreciated!

 

All the best,

 

Dan

With regards to question 2 I think the pink wire shuld go to the handbrake mate, as you are not supposed to have the screen 'viewable' whilst driving. i just hard wired mine to earth ;)

With regards to question 2 I think the pink wire shuld go to the handbrake mate, as you are not supposed to have the screen 'viewable' whilst driving. i just hard wired mine to earth ;)

 

That would make sense! :) The instructions with the HU are so poor it's almost like an IKEA instruction sheet LOL! So, earthing that wire will make the screen viewable at all times?

 

Thanks!

 

Dan

1. yes

 

2. pink - handbrake, generally connecting this to ground makes the screen work all the time, connecting it to handbrake will only allow it to work when stationary.

orange - possibly camera power, possibly connect to reversing lights so the head unit switches to camera input automatically when you reverse

 

3. some headunits have only 1 switched output which comes on as soon as you turn on the head unit (for antena and amp remote switch)

some head units have 2 seperate switched outputs as the antena one only switches on if you are actually listening to radio or have travel watch on

1. yes

 

2. pink - handbrake, generally connecting this to ground makes the screen work all the time, connecting it to handbrake will only allow it to work when stationary.

orange - possibly camera power, possibly connect to reversing lights so the head unit switches to camera input automatically when you reverse

 

3. some headunits have only 1 switched output which comes on as soon as you turn on the head unit (for antena and amp remote switch)

some head units have 2 seperate switched outputs as the antena one only switches on if you are actually listening to radio or have travel watch on

 

Thanks for the info Ian - I appreciate it.

 

I haven't powered up the HU yet so don't know whether it's got two separate switched outputs or one. But what you said makes sense so once the lot is powered up I'll be able to see what's what.

 

As for the orange wire - the instructions seem to indicate that the reverse camera switches on automatically when reverse is selected but also that it is selectable by the user by tapping the appropriate icon on the touch screen. My money is on that the orange wire goes to the reverse lights though.

 

Thanks again!

 

Dan

As for the orange wire - the instructions seem to indicate that the reverse camera switches on automatically when reverse is selected but also that it is selectable by the user by tapping the appropriate icon on the touch screen. My money is on that the orange wire goes to the reverse lights though.Dan

 

yes... anywhere in the loom from the reverse switch off the gb...

 

btw, mosfet means: metal oxide semi-conductive field effect transistor! man im a geek!

yes... anywhere in the loom from the reverse switch off the gb...

 

btw, mosfet means: metal oxide semi-conductive field effect transistor! man im a geek!

 

Doh, I knew that too from my old 1/10th electric RC car days...... :p