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Originally Posted by MT-2500
Sometimes it might work.
But to get the proper power down on the pcm a test light will not do itthe proper way.
And it is hard to read mA amp draw from a test light or 1157 bulb.
On a newer car proper testing and proper equipment is in order.
I have a 02 Impala sitting in my stall.
I hooked a test light and a 1157 bulb on ground side of battery.
All it does is flash like a turn signal.
No way am i going to pulse them pcm threw a test light for 20-30 minutes hoping they will power down without burning up.
MT
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Of course the lamp will light even with low current draw such as 15 mA or less but if that is all you have it will work. I've used an 1157 and on several different cars and it does not blink. Are you sure it was wired correctly? There are two filaments in a 1157. Now I've heard of people using different type of lamps including headlamps. I'll get him to weigh-in. HotZ28.
Keep in mind this is an older '94 Olds 98 not a '02 Impala. And with the parasitic drain he has the lamp will be lit up like a Christmas tree.
Most of us DIY or tech types have a nice John Fluke (at least I do) so the issue is moot and not worth crying over.