1 Electrical question about Aftermarket Digital Instruments from Ebay Sun Jan 04, 2015 6:55 pm
robmack
Life time member
Hi,
I'm wondering if anyone here has purchased an aftermarket speedometer from Ebay, usually sold through Hong Kong and Chinese dealers. These instruments appear like this:
I need to know whether the signals expected by these devices are active low or active high. For example, many models have gear indicators -- do these gear indicators light up when pulled low to ground or raised high to +12V? Same goes for turn signal indicators and high beam indicators.
Thanks for any info.
I'm wondering if anyone here has purchased an aftermarket speedometer from Ebay, usually sold through Hong Kong and Chinese dealers. These instruments appear like this:
I need to know whether the signals expected by these devices are active low or active high. For example, many models have gear indicators -- do these gear indicators light up when pulled low to ground or raised high to +12V? Same goes for turn signal indicators and high beam indicators.
Thanks for any info.
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Robert
1987 K75 @k75retro.blogspot.ca