Bar warmers ?
Posted 22 October 2020 - 10:23 PM
Posted 23 October 2020 - 03:46 AM
Basically there was two ways to do high/low/off on the older ones.
One was in the grip itself. The grip had main heater element and then would have a wire that would split the heater element in half (or 2/3rds). These are 3 wire. (common-high-low)
The other way that some machines did it was to have a resister inline with the "low" wire. Then a switch that would switch between straight and resistor.
These were two wire elements with a SPDT switch that would have a big resistor.
As GPT said, the system is A/C.
If you are putting new 3 wire grips on, you'll need a switch.
One of those wires will be wired directly to the grip/heater elements. The other gets wired to the SPDT switch. Then the two remaining wires from the heater element get wired to each remaining pole on the switch.
The key with the 3 wire element is figuring out which one is the common and which one is high and which one is low. If you just purchased the elements, there should be a piece of paper with the color coding.
Posted 23 October 2020 - 09:04 AM
Posted 26 October 2020 - 05:50 PM
Edited by Berner4, 26 October 2020 - 05:51 PM.
Posted 27 October 2020 - 10:13 AM
if the sled has a 3 position switch, you should be able to use existing.
center wire on the switch is power, other two are high/low.
not true about if it has a battery that it is 12v dc. only newer sleds that have computers run off 12v dc. older sleds only used dc to charge battery. max output on older sleds (pulsating) DC regulators was 5 amps. thus, all accessories ran 12v AC
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