Perfectly happy to meet up with you and help, if you want to go the DIY route, I'm in Sicklinghall - by all means send me a private message.
Unicar in Leeds have fitted four of my cars including a motorhome, A Range Rover in partnership with me - I devised the relay switching circuits , and I've done one along with fitting loads of car stereos in the past.
Ask for Jerry, mention the Hymer motorhome - he'll know who you mean! - I've dealt with him for years.
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Politics and Ideology: Not my bag