I just finished (well, I thought I'd finished) installing a headlight relay system for my 1993 Jeep Grand Cherokee Limited.
Everything worked the first time I turned it on, the headlights both work and are nice & bright. However, after using them something seems off.
When you first turn the lights on what appears to be the low beams come on. This is normal and expected. When you turn the high beams on though it seems they cannot be turned off. Further switching of the high beams appears to turn the low beams on/off. The only way to get it back to just the low beams is to turn the lights off completely, and then back on.
I'm using parts from danielsternlighting, with one stock socket driving the high beam relay and one stock socket driving the low beam relay. I didn't cut the stock harness, the wiring harness I made has 9004 sockets to interface with the factory wiring. I have replaced the factory lamp assemblies with glass fronted ones that take H4 bulbs.
Wiring Diagram (from DanielSternLighting)
The questions:
1) Is it normal to have both filaments of an H4 bulb on at the same time, or should the low beams shut off when the highs are on?
2) I see diagrams online of both relays being driven by the same factory socket, is it possible that my split setup is causing my problems? I can't really see how it would matter, but maybe it does.
3) Is it possible that I simply have the high/low relay inputs reversed? It doesn't seem likely since the lows come on by themselves when the headlights are first turned on.
I'm beginning to wish I had ordered a pre-made harness but this really shouldn't be that difficult. What the heck am I missing?
Viper GTS
Everything worked the first time I turned it on, the headlights both work and are nice & bright. However, after using them something seems off.
When you first turn the lights on what appears to be the low beams come on. This is normal and expected. When you turn the high beams on though it seems they cannot be turned off. Further switching of the high beams appears to turn the low beams on/off. The only way to get it back to just the low beams is to turn the lights off completely, and then back on.
I'm using parts from danielsternlighting, with one stock socket driving the high beam relay and one stock socket driving the low beam relay. I didn't cut the stock harness, the wiring harness I made has 9004 sockets to interface with the factory wiring. I have replaced the factory lamp assemblies with glass fronted ones that take H4 bulbs.
Wiring Diagram (from DanielSternLighting)
The questions:
1) Is it normal to have both filaments of an H4 bulb on at the same time, or should the low beams shut off when the highs are on?
2) I see diagrams online of both relays being driven by the same factory socket, is it possible that my split setup is causing my problems? I can't really see how it would matter, but maybe it does.
3) Is it possible that I simply have the high/low relay inputs reversed? It doesn't seem likely since the lows come on by themselves when the headlights are first turned on.
I'm beginning to wish I had ordered a pre-made harness but this really shouldn't be that difficult. What the heck am I missing?
Viper GTS
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