"false resistance value" - I see at that forum info about how delete resistance into "indicator" - for have "normal gide" - it is WRONG WAY!!!! base temp dont work right when engine bubble - it install into higest point - under it be vapour - vapour dont correctly trans...

"if you drill holes in a "NEW HEAD"" - for next - now you may use that sensor - https://www.chipdip.ru/product/b57045-k102-k
it dont need use wery big drill it be invisible!

often our head breaks after a long drive at high speeds with a large load.... my bongo broke down after driving in the mountains of Georgia - dont move engine more 3000 rpm long time and full accelerator - be happy!

"how are you displaying the temp. from this?" - easy! I connect wire at plug on that temp sensor and plug on base temp sensor - now both temp sensor give signal at indicator - it work now as all "normal car" - stay at 2- o/clock!!!

"remove the glow plugs then look" - our engine have "forcamera" - you dont may look valves and innards of head :( it is how look "cut" head https://mikrob.ru/viewtopic.php?t=23108&start=2940 it is my head - i remove exaust and dont try car apr 1 week - you may see A...

i byu head in china https://ru.aliexpress.com/item/WL-WLT-WL-T-12v-2-5D-cylinder-head-for-FORD-Ranger-2499cc-2-5D-12v/32705131224.html?ws_ab_test=searchweb0_0&dp=93060673ba6a38d7147d7acc8989d6ed&af=51253&cv=47843&afref=http%253A%252F%252Flyvi.ru%252Fgo.php%253Fdo%253DaHR0cHM6Ly9hbGl0...

connect at ground wire from temp sensor on head....what you look?

on my bongo head had crack near exaust valve and dont spitting out coolant'...... only sugar taste of the smoke

check head again

to rustyp - look! do you undestand it? its wery hard for me http://dmn.kuulalaakeri.org/vnt-lda/
http://dmn.kuulalaakeri.org/vnt-lda/serialsetup.html

for next -on my car now i use silicon pipe from MOFE - excelent! https://ru.aliexpress.com/w/wholesale-s ... +hoses&g=y

can't manage to read the codes! - whats problem? :D for next - full selfdiagnostic mazda - most of all metod work on bongo too https://www.drive2.ru/l/5606306/ and that http://www.philmcfadden.co.uk/MazdaDiagnosticBox.htm NOTE- i dont use LED - on bongo I read codes from base lamp HOLD, GLOW,ABS,AIR...

"I found this - it implies an MX5 ABS is Bongo compatible"- its MX5 sensor - http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/mazda/mx5i/16/na/5888/abswheelspeedsensors/bosch/f01g09f09m photo http://www.maxparts.ru/index.php?page=proizv.php&proizv_id=24&ga_id=412...

for next - you must use rear radiator from mazda 626(89-91 year), kia pikanto (need cut and replace tube) https://mikrob.ru/download/file.php?id=206976 or from lada priora or hyndai accent (by HALLA) https://mikrob.ru/download/file.php?id=744011&mode=view https://mikrob.ru/download/file.php?id=7...

wery well!