Any suggestions on replacement low and high beam bulbs for this van.As most people know the headlights on these are not the greatest in the world.I am looking for an improvement that is workable with the present wiring but legal.Thanks in advance. Dan
Nothin' much you can do. Sylvania wants you to buy their SilverStar garbage; it is expensive, short-lived, and worsens(!) the headlamps' performance. The wiring in that van starves the bulbs, which relays and heavy-gauge wiring would fix, but you've said "No wiring changes", so that's out. The high beams could be upgraded substantially by replacing the 9005 bulbs with 9011s, but no such mod is possible with the low beams, because they take that straight-base 9005 bulb for which no legitimate upgrades are made.
Vestatec makes a very good quad projector beam setup for that van, but are you ready to sink $700 into headlamps?
Vmaxx quad projector beam setup w/Hella optics -- around $800 for halogen, around $2500 for Xenon.
European-market stock headlamps, nice ZKW-made items with quad H7 reflector beams, if you've got friends in Europe. Price varies by source.
It would sooner or later give you a good reason to get new headlamp assemblies, as the 100% thermal overload within the bulb presents the severe risk of bulb explosion, which destroys the headlamp completely. Maybe you'd be unlucky enough for the bulb glass to hold long enough for the doubly-overloaded common ground wire to barbecue, and take some or all of what's in its path with it. Switching relay, BCM, beam selector switch...
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