Parker light system fail

[TheStarletGT]

Parker lights and dash cluster background light not working.



Just recently, i removed the heater/cooling fan from under the dash + aircon box and heater box. Now the parker light system fuse blows everytime i get it activated. Wiring from engine bay loom to parker light plugs are 100% perfect. Why is the fuse blowing, what does the fan/aircon/heater box gotta do with the parker light system.


Anybody experienced this.

 

[J25GTi]

Well the wiring obviously isn't perfect if the fuse is blowing...

Anyway why do you need our help? I thought you were the EP whizz kid who knew it all? Lol.

 

[dark_knight]

Did you check that you didn't pinch any of the harness wires while you were putting back the components..?
Also, you may have done something else unrelated to the heater/cooler fan that may be the cause of this problem so try and remember if you did anything else (perhaps even in the engine bay) that could have caused this..

 

[TheStarletGT]

A quick update:


1: I have wired the parker lights on a external wiring system activated by a flick switch.
2: Dash background light works as normal with activation by the hand piece.



Conclusion: By wiring the front and back lights via a seperate wiring system, i have eliminated whatever that was causing the blown fuses. Since bypassing the conventional parker light activation stalk thingy, it just shows that there was a issue and it is now isolated. Dash background light works as normal.


In future, i could reconnect each corner and see which is the culprit, but nah, phuck that. Works good now. Now if anything goes wrong, i just have 1 thing to look at, the fuse. Bypassing the chassis wiring loom is a fantastic outcome, that way i dont have to rip my hair out in anger trying to figure out what is wrong.

 

[dark_knight]

I hope you passed your 'new wiring' through a fuse. It can be a simple in-line fuse with the proper rating depending on your lights (wattage). This is critical since we don't want any car fires now do we..?

A simple physics formula you can use to calculate the rating of the fuse to use is:
P = IV;
where P = power (watts), I = current (amps) and V= volts (volts)
so, in your case, you'd be looking for how much current is going through that circuit:
I = P/V

Assuming you are using three 21-watt bulbs (3 bulbs would give 63 watts total), and the vehicle voltage is the standard 12v, your formula would be:
I = P/V;
I = 63/12;
I = 5.25 amps
thus the best fuse to use would be a 6A or 7.5A one. I think the 7.5A is the more common one in our vehicles.
Hope this is of some help.