Joe In Montana
1/2 ton status
- Joined
- Sep 9, 2016
- Posts
- 283
- Reaction score
- 109
This isn't too technical - but adding LED lights to a GM product with the dual bulb, single housing/lense assembly is kinda oddball.
I own an Isuzu so I wasn't caught flat footed on this problem vehicle. For the record, this is on a 2000 Astro Van that doesn't go offroad unless it's a gravel driveway. It belongs to SWMBO.
The headlight wiring is crazy simple if one first finds out that polarity is switched in the stock system to keep only one bulb lit in the headlight assembly.
Adding a pair of Nilight LED 36 Watt driving lamps inside the grill was make harder to just 'do' with this wacky wiring/engineering.
All you have to do is add both legs of the new LED lights to the two wires that are running to (in my situation) the HIGH BEAM circuit.
In going from High Beam to Low Beam, there will be a change of polarity on that lighting pair, so test the wiring with the High Beam lights ON.
Once the polarity swaps, in my situation goes to LOW BEAM ... the LEDs go out.
HTHs somebody with the same idea I have on adding aux LEDs.
I own an Isuzu so I wasn't caught flat footed on this problem vehicle. For the record, this is on a 2000 Astro Van that doesn't go offroad unless it's a gravel driveway. It belongs to SWMBO.
The headlight wiring is crazy simple if one first finds out that polarity is switched in the stock system to keep only one bulb lit in the headlight assembly.
Adding a pair of Nilight LED 36 Watt driving lamps inside the grill was make harder to just 'do' with this wacky wiring/engineering.
I swear that guys in cubicles just like to complicate things as a way to job security.
All you have to do is add both legs of the new LED lights to the two wires that are running to (in my situation) the HIGH BEAM circuit.
In going from High Beam to Low Beam, there will be a change of polarity on that lighting pair, so test the wiring with the High Beam lights ON.
One will read + and the other will be -
Just splice in the new wires parallel with the existing wires and all will be good. I made sure that the LEDs ONLY come on when High Beam lighting is called for.
Once the polarity swaps, in my situation goes to LOW BEAM ... the LEDs go out.
HTHs somebody with the same idea I have on adding aux LEDs.
