Big Blue
Well-Known Member
OK, my testing was done with the parking lights as only one criteria. I tested the lights with the only power to them being the tapped power. The headlight unplugged from the truck harness plug. The fuse tap was the touched to the positive battery post. Got the startup sequence and bright DRL bars. Got same results with harness replugged and headlight switch in off position parking lights were timed out from opening door. If the door was opened to activate the parking lights, the DRL bars dimmed until they timed out and then brightened. This is why I believe the only affect of having power to the parking pin is to put the DRL bars in the dim mode by powering them by the parking lead instead of the tapped power. This is because they come on dim without the tapped power connected, as do the turn signals with sequential working if the jumper is connected.I also watched the (Headlight Revolution) video
The Start-Up Sequence is this:
DRL - Lit Bright
Headlight Trigger -(Turn ON)- (OB to IB) in 3 phases in Dim
Headlights Pulse - (IB to OB) in 3-Phases to Bright
Headlights Pulse - (OB to IB) in 3 -Phases to Dim
Headlight Trigger -(IB to OB) in 3-Phases to Off
So be it (HIDDEN) or (BLOCKED) when the Headlights are commanded on by BCM we need to find a alternate solution to getting the (DRL-Bright) to activate the Start-Up sequence before the BCM takes control.
This is my reasoning of moving when the (DRL-Power) comes in as a possible solution to the issue.
This theory can only be tested by (adding) a relay into the circuit and letting Park Lamp Power do it.
So YES, the DRL input - must be powered to begin (start) the sequence, if we let the (Park Lamp) input be the trigger it just (MAY) start the sequence up and the end result will (END) with the headlight's on in (DARK)
as for your testing this far has been using (Park Lamps) gets the (Start-Up) sequence to work, but if you go to (Headlamp) position or (Auto) position in the dark, the BCM has already powered the Headlights.
By using the (Park Lamps) Powering as the trigger, may let the (Start-Up) sequence happen before the BCM can take control and turn on the lights.
It is a BATTLE of which RELAY wins the RACE to power the headlight.
Bug's Bunny (The BCM) is winning the race, and we need to slow him down and introduce the (Tortoise) short cut in powering the lights first.
Again, this is all THEORY BASED, but if I had these lights, I would try everything possible to fix the issue, being that this issue is discovered (AFTER) the Time-Consuming install of them.
With Morimoto NOT PROVIDING support for this issue it takes some deep thought on how to fix the issue that they are ignoring and just say (send us the Headlights) for replacement.
I am a Troubleshooter by Trade and this issue can be fixed I believe it's just going to take some time to find the correct way to cure it (By Trial & Error)
You have provided me with some valuable info, and I am looking at this issue from a (power supply) aspect as it is looking like the (As-Built) BCM changes will not provide the power I am looking to have and when it comes in.
I am looking at (alternatives) to changing when & how that power is applied from the actual wiring harness as a possible solution.
Will it make any difference? IDK, but it would be worth a try, no harm to the lights just a small investment in a (relay) and (some wire) and about 30-Minutes to wire it up and mount the relay.
But with Relay (In-Hand) before I would actually Wire-Tap wire #5, I would Back-Probe) the connector first and tap power from that, then proceed with testing to outcome on (Back-Probing) both sides Left & Right to see if there is any time delay (In that circuit) which side will provide the result I want (if it matters) the best.
If successful then do the actual Wire Tap of Pin #5
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