[mikethedruid]

Yeah, Terry. JustRadios.com carries 5 watt 40 ohm resistors for 59 cents each, or you can also find them on eBay, which, with the $20 minimum order on JustRadios might be cheaper, The draw is about 0.25 amps, so 0.25 x 0.25 x 40 = 2.5, I figure 5 watt will be OK, although it is only twice the wattage being dissipated.  10 watt power resistors are bigger, and would need to be mounted to the chassis. that could also be done. eBay also has those. 
https://www.ebay.com/itm/qty-3-RESISTOR-...7869!US!-1

https://www.ebay.com/itm/US-Stock-5x-40-...7869!US!-1